642071804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{394393}}^1$

素因数の和:394445

約数の個数: 24

約数和(自身を含む): 1258905648

約数和(自身を除く): 616833844

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 394393, 788786, 1577572, 4338323, 8676646, 14592541, 17353292, 29185082, 58370164, 160517951, 321035902, 642071804]

約数ペア:

[(1, 642071804), (2, 321035902), (4, 160517951), (11, 58370164), (22, 29185082), (37, 17353292), (44, 14592541), (74, 8676646), (148, 4338323), (407, 1577572), (814, 788786), (1628, 394393)]