77888980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{15767}}^1$

素因数の和:15808

約数の個数: 48

約数和(自身を含む): 185431680

約数和(自身を除く): 107542700

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, 15767, 31534, 63068, 78835, 157670, 204971, 299573, 315340, 409942, 599146, 819884, 1024855, 1198292, 1497865, 2049710, 2995730, 3894449, 4099420, 5991460, 7788898, 15577796, 19472245, 38944490, 77888980]

約数ペア:

[(1, 77888980), (2, 38944490), (4, 19472245), (5, 15577796), (10, 7788898), (13, 5991460), (19, 4099420), (20, 3894449), (26, 2995730), (38, 2049710), (52, 1497865), (65, 1198292), (76, 1024855), (95, 819884), (130, 599146), (190, 409942), (247, 315340), (260, 299573), (380, 204971), (494, 157670), (988, 78835), (1235, 63068), (2470, 31534), (4940, 15767)]