20463940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{467}}^1$

素因数の和:796

約数の個数: 48

約数和(自身を含む): 49375872

約数和(自身を除く): 28911932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 313, 467, 626, 934, 1252, 1565, 1868, 2191, 2335, 3130, 3269, 4382, 4670, 6260, 6538, 8764, 9340, 10955, 13076, 16345, 21910, 32690, 43820, 65380, 146171, 292342, 584684, 730855, 1023197, 1461710, 2046394, 2923420, 4092788, 5115985, 10231970, 20463940]

約数ペア:

[(1, 20463940), (2, 10231970), (4, 5115985), (5, 4092788), (7, 2923420), (10, 2046394), (14, 1461710), (20, 1023197), (28, 730855), (35, 584684), (70, 292342), (140, 146171), (313, 65380), (467, 43820), (626, 32690), (934, 21910), (1252, 16345), (1565, 13076), (1868, 10955), (2191, 9340), (2335, 8764), (3130, 6538), (3269, 6260), (4382, 4670)]