28288280

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2689}}^1$

素因数の和:2963

約数の個数: 32

約数和(自身を含む): 63914400

約数和(自身を除く): 35626120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 2689, 5260, 5378, 10520, 10756, 13445, 21512, 26890, 53780, 107560, 707207, 1414414, 2828828, 3536035, 5657656, 7072070, 14144140, 28288280]

約数ペア:

[(1, 28288280), (2, 14144140), (4, 7072070), (5, 5657656), (8, 3536035), (10, 2828828), (20, 1414414), (40, 707207), (263, 107560), (526, 53780), (1052, 26890), (1315, 21512), (2104, 13445), (2630, 10756), (2689, 10520), (5260, 5378)]