7878280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2213}}^1$

素因数の和:2313

約数の個数: 32

約数和(自身を含む): 17933400

約数和(自身を除く): 10055120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 2213, 3560, 4426, 8852, 11065, 17704, 22130, 44260, 88520, 196957, 393914, 787828, 984785, 1575656, 1969570, 3939140, 7878280]

約数ペア:

[(1, 7878280), (2, 3939140), (4, 1969570), (5, 1575656), (8, 984785), (10, 787828), (20, 393914), (40, 196957), (89, 88520), (178, 44260), (356, 22130), (445, 17704), (712, 11065), (890, 8852), (1780, 4426), (2213, 3560)]