30815820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{661}}^1$

素因数の和:720

約数の個数: 144

約数和(自身を含む): 109881408

約数和(自身を除く): 79065588

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 60, 63, 70, 74, 84, 90, 105, 111, 126, 140, 148, 180, 185, 210, 222, 252, 259, 315, 333, 370, 420, 444, 518, 555, 630, 661, 666, 740, 777, 1036, 1110, 1260, 1295, 1322, 1332, 1554, 1665, 1983, 2220, 2331, 2590, 2644, 3108, 3305, 3330, 3885, 3966, 4627, 4662, 5180, 5949, 6610, 6660, 7770, 7932, 9254, 9324, 9915, 11655, 11898, 13220, 13881, 15540, 18508, 19830, 23135, 23310, 23796, 24457, 27762, 29745, 39660, 41643, 46270, 46620, 48914, 55524, 59490, 69405, 73371, 83286, 92540, 97828, 118980, 122285, 138810, 146742, 166572, 171199, 208215, 220113, 244570, 277620, 293484, 342398, 366855, 416430, 440226, 489140, 513597, 684796, 733710, 832860, 855995, 880452, 1027194, 1100565, 1467420, 1540791, 1711990, 2054388, 2201130, 2567985, 3081582, 3423980, 4402260, 5135970, 6163164, 7703955, 10271940, 15407910, 30815820]

約数ペア:

[(1, 30815820), (2, 15407910), (3, 10271940), (4, 7703955), (5, 6163164), (6, 5135970), (7, 4402260), (9, 3423980), (10, 3081582), (12, 2567985), (14, 2201130), (15, 2054388), (18, 1711990), (20, 1540791), (21, 1467420), (28, 1100565), (30, 1027194), (35, 880452), (36, 855995), (37, 832860), (42, 733710), (45, 684796), (60, 513597), (63, 489140), (70, 440226), (74, 416430), (84, 366855), (90, 342398), (105, 293484), (111, 277620), (126, 244570), (140, 220113), (148, 208215), (180, 171199), (185, 166572), (210, 146742), (222, 138810), (252, 122285), (259, 118980), (315, 97828), (333, 92540), (370, 83286), (420, 73371), (444, 69405), (518, 59490), (555, 55524), (630, 48914), (661, 46620), (666, 46270), (740, 41643), (777, 39660), (1036, 29745), (1110, 27762), (1260, 24457), (1295, 23796), (1322, 23310), (1332, 23135), (1554, 19830), (1665, 18508), (1983, 15540), (2220, 13881), (2331, 13220), (2590, 11898), (2644, 11655), (3108, 9915), (3305, 9324), (3330, 9254), (3885, 7932), (3966, 7770), (4627, 6660), (4662, 6610), (5180, 5949)]