28305560

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7951}}^1$

素因数の和:8051

約数の個数: 32

約数和(自身を含む): 64411200

約数和(自身を除く): 36105640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 7951, 15902, 31804, 39755, 63608, 79510, 159020, 318040, 707639, 1415278, 2830556, 3538195, 5661112, 7076390, 14152780, 28305560]

約数ペア:

[(1, 28305560), (2, 14152780), (4, 7076390), (5, 5661112), (8, 3538195), (10, 2830556), (20, 1415278), (40, 707639), (89, 318040), (178, 159020), (356, 79510), (445, 63608), (712, 39755), (890, 31804), (1780, 15902), (3560, 7951)]