18954980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2971}}^1$

素因数の和:3020

約数の個数: 48

約数和(自身を含む): 44936640

約数和(自身を除く): 25981660

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 2971, 3190, 5942, 6380, 11884, 14855, 29710, 32681, 59420, 65362, 86159, 130724, 163405, 172318, 326810, 344636, 430795, 653620, 861590, 947749, 1723180, 1895498, 3790996, 4738745, 9477490, 18954980]

約数ペア:

[(1, 18954980), (2, 9477490), (4, 4738745), (5, 3790996), (10, 1895498), (11, 1723180), (20, 947749), (22, 861590), (29, 653620), (44, 430795), (55, 344636), (58, 326810), (110, 172318), (116, 163405), (145, 130724), (220, 86159), (290, 65362), (319, 59420), (580, 32681), (638, 29710), (1276, 14855), (1595, 11884), (2971, 6380), (3190, 5942)]