19798818

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{151}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 43998528

約数和(自身を除く): 24199710

約数列:

[1, 2, 3, 6, 13, 26, 39, 41, 78, 82, 123, 151, 246, 302, 453, 533, 906, 1066, 1599, 1681, 1963, 3198, 3362, 3926, 5043, 5889, 6191, 10086, 11778, 12382, 18573, 21853, 37146, 43706, 65559, 80483, 131118, 160966, 241449, 253831, 482898, 507662, 761493, 1522986, 3299803, 6599606, 9899409, 19798818]

約数ペア:

[(1, 19798818), (2, 9899409), (3, 6599606), (6, 3299803), (13, 1522986), (26, 761493), (39, 507662), (41, 482898), (78, 253831), (82, 241449), (123, 160966), (151, 131118), (246, 80483), (302, 65559), (453, 43706), (533, 37146), (906, 21853), (1066, 18573), (1599, 12382), (1681, 11778), (1963, 10086), (3198, 6191), (3362, 5889), (3926, 5043)]