21387470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{311}}^1$

素因数の和:377

約数の個数: 48

約数和(自身を含む): 43479072

約数和(自身を除く): 22091602

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 311, 529, 598, 622, 1058, 1495, 1555, 2645, 2990, 3110, 4043, 5290, 6877, 7153, 8086, 13754, 14306, 20215, 34385, 35765, 40430, 68770, 71530, 92989, 164519, 185978, 329038, 464945, 822595, 929890, 1645190, 2138747, 4277494, 10693735, 21387470]

約数ペア:

[(1, 21387470), (2, 10693735), (5, 4277494), (10, 2138747), (13, 1645190), (23, 929890), (26, 822595), (46, 464945), (65, 329038), (115, 185978), (130, 164519), (230, 92989), (299, 71530), (311, 68770), (529, 40430), (598, 35765), (622, 34385), (1058, 20215), (1495, 14306), (1555, 13754), (2645, 8086), (2990, 7153), (3110, 6877), (4043, 5290)]