878909980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{177917}}^1$

素因数の和:177958

約数の個数: 48

約数和(自身を含む): 2092315680

約数和(自身を除く): 1213405700

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 177917, 355834, 711668, 889585, 1779170, 2312921, 3380423, 3558340, 4625842, 6760846, 9251684, 11564605, 13521692, 16902115, 23129210, 33804230, 43945499, 46258420, 67608460, 87890998, 175781996, 219727495, 439454990, 878909980]

約数ペア:

[(1, 878909980), (2, 439454990), (4, 219727495), (5, 175781996), (10, 87890998), (13, 67608460), (19, 46258420), (20, 43945499), (26, 33804230), (38, 23129210), (52, 16902115), (65, 13521692), (76, 11564605), (95, 9251684), (130, 6760846), (190, 4625842), (247, 3558340), (260, 3380423), (380, 2312921), (494, 1779170), (988, 889585), (1235, 711668), (2470, 355834), (4940, 177917)]