25487020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1607}}^1$

素因数の和:1690

約数の個数: 48

約数和(自身を含む): 58621248

約数和(自身を除く): 33134228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 1607, 3172, 3214, 3965, 6428, 7930, 8035, 15860, 16070, 20891, 32140, 41782, 83564, 98027, 104455, 196054, 208910, 392108, 417820, 490135, 980270, 1274351, 1960540, 2548702, 5097404, 6371755, 12743510, 25487020]

約数ペア:

[(1, 25487020), (2, 12743510), (4, 6371755), (5, 5097404), (10, 2548702), (13, 1960540), (20, 1274351), (26, 980270), (52, 490135), (61, 417820), (65, 392108), (122, 208910), (130, 196054), (244, 104455), (260, 98027), (305, 83564), (610, 41782), (793, 32140), (1220, 20891), (1586, 16070), (1607, 15860), (3172, 8035), (3214, 7930), (3965, 6428)]