399451388

素因数分解:

$2^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{79699}}^1$

素因数の和:79889

約数の個数: 24

約数和(自身を含む): 803376000

約数和(自身を除く): 403924612

約数列:

[1, 2, 4, 7, 14, 28, 179, 358, 716, 1253, 2506, 5012, 79699, 159398, 318796, 557893, 1115786, 2231572, 14266121, 28532242, 57064484, 99862847, 199725694, 399451388]

約数ペア:

[(1, 399451388), (2, 199725694), (4, 99862847), (7, 57064484), (14, 28532242), (28, 14266121), (179, 2231572), (358, 1115786), (716, 557893), (1253, 318796), (2506, 159398), (5012, 79699)]