20447910

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:403

約数の個数: 128

約数和(自身を含む): 64512000

約数和(自身を除く): 44064090

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 31, 35, 42, 45, 54, 62, 63, 70, 90, 93, 105, 126, 135, 155, 186, 189, 210, 217, 270, 279, 310, 315, 349, 378, 434, 465, 558, 630, 651, 698, 837, 930, 945, 1047, 1085, 1302, 1395, 1674, 1745, 1890, 1953, 2094, 2170, 2443, 2790, 3141, 3255, 3490, 3906, 4185, 4886, 5235, 5859, 6282, 6510, 7329, 8370, 9423, 9765, 10470, 10819, 11718, 12215, 14658, 15705, 18846, 19530, 21638, 21987, 24430, 29295, 31410, 32457, 36645, 43974, 47115, 54095, 58590, 64914, 65961, 73290, 75733, 94230, 97371, 108190, 109935, 131922, 151466, 162285, 194742, 219870, 227199, 292113, 324570, 329805, 378665, 454398, 486855, 584226, 659610, 681597, 757330, 973710, 1135995, 1363194, 1460565, 2044791, 2271990, 2921130, 3407985, 4089582, 6815970, 10223955, 20447910]

約数ペア:

[(1, 20447910), (2, 10223955), (3, 6815970), (5, 4089582), (6, 3407985), (7, 2921130), (9, 2271990), (10, 2044791), (14, 1460565), (15, 1363194), (18, 1135995), (21, 973710), (27, 757330), (30, 681597), (31, 659610), (35, 584226), (42, 486855), (45, 454398), (54, 378665), (62, 329805), (63, 324570), (70, 292113), (90, 227199), (93, 219870), (105, 194742), (126, 162285), (135, 151466), (155, 131922), (186, 109935), (189, 108190), (210, 97371), (217, 94230), (270, 75733), (279, 73290), (310, 65961), (315, 64914), (349, 58590), (378, 54095), (434, 47115), (465, 43974), (558, 36645), (630, 32457), (651, 31410), (698, 29295), (837, 24430), (930, 21987), (945, 21638), (1047, 19530), (1085, 18846), (1302, 15705), (1395, 14658), (1674, 12215), (1745, 11718), (1890, 10819), (1953, 10470), (2094, 9765), (2170, 9423), (2443, 8370), (2790, 7329), (3141, 6510), (3255, 6282), (3490, 5859), (3906, 5235), (4185, 4886)]