21377460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27407}}^1$

素因数の和:27432

約数の個数: 48

約数和(自身を含む): 64463616

約数和(自身を除く): 43086156

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27407, 54814, 82221, 109628, 137035, 164442, 274070, 328884, 356291, 411105, 548140, 712582, 822210, 1068873, 1425164, 1644420, 1781455, 2137746, 3562910, 4275492, 5344365, 7125820, 10688730, 21377460]

約数ペア:

[(1, 21377460), (2, 10688730), (3, 7125820), (4, 5344365), (5, 4275492), (6, 3562910), (10, 2137746), (12, 1781455), (13, 1644420), (15, 1425164), (20, 1068873), (26, 822210), (30, 712582), (39, 548140), (52, 411105), (60, 356291), (65, 328884), (78, 274070), (130, 164442), (156, 137035), (195, 109628), (260, 82221), (390, 54814), (780, 27407)]