21712245

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{881}}^1$

素因数の和:973

約数の個数: 32

約数和(自身を含む): 36578304

約数和(自身を除く): 14866059

約数列:

[1, 3, 5, 15, 31, 53, 93, 155, 159, 265, 465, 795, 881, 1643, 2643, 4405, 4929, 8215, 13215, 24645, 27311, 46693, 81933, 136555, 140079, 233465, 409665, 700395, 1447483, 4342449, 7237415, 21712245]

約数ペア:

[(1, 21712245), (3, 7237415), (5, 4342449), (15, 1447483), (31, 700395), (53, 409665), (93, 233465), (155, 140079), (159, 136555), (265, 81933), (465, 46693), (795, 27311), (881, 24645), (1643, 13215), (2643, 8215), (4405, 4929)]