25871380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 56548800

約数和(自身を除く): 30677420

約数列:

[1, 2, 4, 5, 10, 20, 43, 67, 86, 134, 172, 215, 268, 335, 430, 449, 670, 860, 898, 1340, 1796, 2245, 2881, 4490, 5762, 8980, 11524, 14405, 19307, 28810, 30083, 38614, 57620, 60166, 77228, 96535, 120332, 150415, 193070, 300830, 386140, 601660, 1293569, 2587138, 5174276, 6467845, 12935690, 25871380]

約数ペア:

[(1, 25871380), (2, 12935690), (4, 6467845), (5, 5174276), (10, 2587138), (20, 1293569), (43, 601660), (67, 386140), (86, 300830), (134, 193070), (172, 150415), (215, 120332), (268, 96535), (335, 77228), (430, 60166), (449, 57620), (670, 38614), (860, 30083), (898, 28810), (1340, 19307), (1796, 14405), (2245, 11524), (2881, 8980), (4490, 5762)]