209755980

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:430

約数の個数: 240

約数和(自身を含む): 768398400

約数和(自身を除く): 558642420

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 53, 54, 60, 63, 70, 81, 84, 90, 105, 106, 108, 126, 135, 140, 159, 162, 180, 189, 210, 212, 252, 265, 270, 315, 318, 324, 349, 371, 378, 405, 420, 477, 530, 540, 567, 630, 636, 698, 742, 756, 795, 810, 945, 954, 1047, 1060, 1113, 1134, 1260, 1396, 1431, 1484, 1590, 1620, 1745, 1855, 1890, 1908, 2094, 2226, 2268, 2385, 2443, 2835, 2862, 3141, 3180, 3339, 3490, 3710, 3780, 4188, 4293, 4452, 4770, 4886, 5235, 5565, 5670, 5724, 6282, 6678, 6980, 7155, 7329, 7420, 8586, 9423, 9540, 9772, 10017, 10470, 11130, 11340, 12215, 12564, 13356, 14310, 14658, 15705, 16695, 17172, 18497, 18846, 20034, 20940, 21465, 21987, 22260, 24430, 28269, 28620, 29316, 30051, 31410, 33390, 36645, 36994, 37692, 40068, 42930, 43974, 47115, 48860, 50085, 55491, 56538, 60102, 62820, 65961, 66780, 73290, 73988, 85860, 87948, 92485, 94230, 100170, 109935, 110982, 113076, 120204, 129479, 131922, 141345, 146580, 150255, 166473, 184970, 188460, 197883, 200340, 219870, 221964, 258958, 263844, 277455, 282690, 300510, 329805, 332946, 369940, 388437, 395766, 439740, 499419, 517916, 554910, 565380, 601020, 647395, 659610, 665892, 776874, 791532, 832365, 989415, 998838, 1109820, 1165311, 1294790, 1319220, 1498257, 1553748, 1664730, 1942185, 1978830, 1997676, 2330622, 2497095, 2589580, 2996514, 3329460, 3495933, 3884370, 3957660, 4661244, 4994190, 5826555, 5993028, 6991866, 7491285, 7768740, 9988380, 10487799, 11653110, 13983732, 14982570, 17479665, 20975598, 23306220, 29965140, 34959330, 41951196, 52438995, 69918660, 104877990, 209755980]

約数ペア:

[(1, 209755980), (2, 104877990), (3, 69918660), (4, 52438995), (5, 41951196), (6, 34959330), (7, 29965140), (9, 23306220), (10, 20975598), (12, 17479665), (14, 14982570), (15, 13983732), (18, 11653110), (20, 10487799), (21, 9988380), (27, 7768740), (28, 7491285), (30, 6991866), (35, 5993028), (36, 5826555), (42, 4994190), (45, 4661244), (53, 3957660), (54, 3884370), (60, 3495933), (63, 3329460), (70, 2996514), (81, 2589580), (84, 2497095), (90, 2330622), (105, 1997676), (106, 1978830), (108, 1942185), (126, 1664730), (135, 1553748), (140, 1498257), (159, 1319220), (162, 1294790), (180, 1165311), (189, 1109820), (210, 998838), (212, 989415), (252, 832365), (265, 791532), (270, 776874), (315, 665892), (318, 659610), (324, 647395), (349, 601020), (371, 565380), (378, 554910), (405, 517916), (420, 499419), (477, 439740), (530, 395766), (540, 388437), (567, 369940), (630, 332946), (636, 329805), (698, 300510), (742, 282690), (756, 277455), (795, 263844), (810, 258958), (945, 221964), (954, 219870), (1047, 200340), (1060, 197883), (1113, 188460), (1134, 184970), (1260, 166473), (1396, 150255), (1431, 146580), (1484, 141345), (1590, 131922), (1620, 129479), (1745, 120204), (1855, 113076), (1890, 110982), (1908, 109935), (2094, 100170), (2226, 94230), (2268, 92485), (2385, 87948), (2443, 85860), (2835, 73988), (2862, 73290), (3141, 66780), (3180, 65961), (3339, 62820), (3490, 60102), (3710, 56538), (3780, 55491), (4188, 50085), (4293, 48860), (4452, 47115), (4770, 43974), (4886, 42930), (5235, 40068), (5565, 37692), (5670, 36994), (5724, 36645), (6282, 33390), (6678, 31410), (6980, 30051), (7155, 29316), (7329, 28620), (7420, 28269), (8586, 24430), (9423, 22260), (9540, 21987), (9772, 21465), (10017, 20940), (10470, 20034), (11130, 18846), (11340, 18497), (12215, 17172), (12564, 16695), (13356, 15705), (14310, 14658)]