20449730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{751}}^1$

素因数の和:1154

約数の個数: 32

約数和(自身を含む): 42232320

約数和(自身を除く): 21782590

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 389, 751, 778, 1502, 1945, 2723, 3755, 3890, 5257, 5446, 7510, 10514, 13615, 26285, 27230, 52570, 292139, 584278, 1460695, 2044973, 2921390, 4089946, 10224865, 20449730]

約数ペア:

[(1, 20449730), (2, 10224865), (5, 4089946), (7, 2921390), (10, 2044973), (14, 1460695), (35, 584278), (70, 292139), (389, 52570), (751, 27230), (778, 26285), (1502, 13615), (1945, 10514), (2723, 7510), (3755, 5446), (3890, 5257)]