721361680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{40801}}^1$

素因数の和:40844

約数の個数: 80

約数和(自身を含む): 1912471344

約数和(自身を除く): 1191109664

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1360, 1768, 2210, 3536, 4420, 8840, 17680, 40801, 81602, 163204, 204005, 326408, 408010, 530413, 652816, 693617, 816020, 1060826, 1387234, 1632040, 2121652, 2652065, 2774468, 3264080, 3468085, 4243304, 5304130, 5548936, 6936170, 8486608, 9017021, 10608260, 11097872, 13872340, 18034042, 21216520, 27744680, 36068084, 42433040, 45085105, 55489360, 72136168, 90170210, 144272336, 180340420, 360680840, 721361680]

約数ペア:

[(1, 721361680), (2, 360680840), (4, 180340420), (5, 144272336), (8, 90170210), (10, 72136168), (13, 55489360), (16, 45085105), (17, 42433040), (20, 36068084), (26, 27744680), (34, 21216520), (40, 18034042), (52, 13872340), (65, 11097872), (68, 10608260), (80, 9017021), (85, 8486608), (104, 6936170), (130, 5548936), (136, 5304130), (170, 4243304), (208, 3468085), (221, 3264080), (260, 2774468), (272, 2652065), (340, 2121652), (442, 1632040), (520, 1387234), (680, 1060826), (884, 816020), (1040, 693617), (1105, 652816), (1360, 530413), (1768, 408010), (2210, 326408), (3536, 204005), (4420, 163204), (8840, 81602), (17680, 40801)]