657580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1$

素因数の和:95

約数の個数: 72

約数和(自身を含む): 1781136

約数和(自身を除く): 1123556

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 61, 70, 77, 98, 110, 122, 140, 154, 196, 220, 244, 245, 305, 308, 385, 427, 490, 539, 610, 671, 770, 854, 980, 1078, 1220, 1342, 1540, 1708, 2135, 2156, 2684, 2695, 2989, 3355, 4270, 4697, 5390, 5978, 6710, 8540, 9394, 10780, 11956, 13420, 14945, 18788, 23485, 29890, 32879, 46970, 59780, 65758, 93940, 131516, 164395, 328790, 657580]

約数ペア:

[(1, 657580), (2, 328790), (4, 164395), (5, 131516), (7, 93940), (10, 65758), (11, 59780), (14, 46970), (20, 32879), (22, 29890), (28, 23485), (35, 18788), (44, 14945), (49, 13420), (55, 11956), (61, 10780), (70, 9394), (77, 8540), (98, 6710), (110, 5978), (122, 5390), (140, 4697), (154, 4270), (196, 3355), (220, 2989), (244, 2695), (245, 2684), (305, 2156), (308, 2135), (385, 1708), (427, 1540), (490, 1342), (539, 1220), (610, 1078), (671, 980), (770, 854)]