20543580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1871}}^1$

素因数の和:1947

約数の個数: 72

約数和(自身を含む): 63370944

約数和(自身を除く): 42827364

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 1871, 2196, 2745, 3660, 3742, 5490, 5613, 7484, 9355, 10980, 11226, 16839, 18710, 22452, 28065, 33678, 37420, 56130, 67356, 84195, 112260, 114131, 168390, 228262, 336780, 342393, 456524, 570655, 684786, 1027179, 1141310, 1369572, 1711965, 2054358, 2282620, 3423930, 4108716, 5135895, 6847860, 10271790, 20543580]

約数ペア:

[(1, 20543580), (2, 10271790), (3, 6847860), (4, 5135895), (5, 4108716), (6, 3423930), (9, 2282620), (10, 2054358), (12, 1711965), (15, 1369572), (18, 1141310), (20, 1027179), (30, 684786), (36, 570655), (45, 456524), (60, 342393), (61, 336780), (90, 228262), (122, 168390), (180, 114131), (183, 112260), (244, 84195), (305, 67356), (366, 56130), (549, 37420), (610, 33678), (732, 28065), (915, 22452), (1098, 18710), (1220, 16839), (1830, 11226), (1871, 10980), (2196, 9355), (2745, 7484), (3660, 5613), (3742, 5490)]