1565980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{317}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 3739680

約数和(自身を除く): 2173700

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 317, 380, 494, 634, 988, 1235, 1268, 1585, 2470, 3170, 4121, 4940, 6023, 6340, 8242, 12046, 16484, 20605, 24092, 30115, 41210, 60230, 78299, 82420, 120460, 156598, 313196, 391495, 782990, 1565980]

約数ペア:

[(1, 1565980), (2, 782990), (4, 391495), (5, 313196), (10, 156598), (13, 120460), (19, 82420), (20, 78299), (26, 60230), (38, 41210), (52, 30115), (65, 24092), (76, 20605), (95, 16484), (130, 12046), (190, 8242), (247, 6340), (260, 6023), (317, 4940), (380, 4121), (494, 3170), (634, 2470), (988, 1585), (1235, 1268)]