20440938050

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{430789}}^1$

素因数の和:430887

約数の個数: 48

約数和(自身を含む): 41505754920

約数和(自身を除く): 21064816870

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 650, 730, 949, 1825, 1898, 3650, 4745, 9490, 23725, 47450, 430789, 861578, 2153945, 4307890, 5600257, 10769725, 11200514, 21539450, 28001285, 31447597, 56002570, 62895194, 140006425, 157237985, 280012850, 314475970, 408818761, 786189925, 817637522, 1572379850, 2044093805, 4088187610, 10220469025, 20440938050]

約数ペア:

[(1, 20440938050), (2, 10220469025), (5, 4088187610), (10, 2044093805), (13, 1572379850), (25, 817637522), (26, 786189925), (50, 408818761), (65, 314475970), (73, 280012850), (130, 157237985), (146, 140006425), (325, 62895194), (365, 56002570), (650, 31447597), (730, 28001285), (949, 21539450), (1825, 11200514), (1898, 10769725), (3650, 5600257), (4745, 4307890), (9490, 2153945), (23725, 861578), (47450, 430789)]