25506520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{271}}^1$

素因数の和:476

約数の個数: 64

約数和(自身を含む): 62375040

約数和(自身を除く): 36868520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 181, 260, 271, 362, 520, 542, 724, 905, 1084, 1355, 1448, 1810, 2168, 2353, 2710, 3523, 3620, 4706, 5420, 7046, 7240, 9412, 10840, 11765, 14092, 17615, 18824, 23530, 28184, 35230, 47060, 49051, 70460, 94120, 98102, 140920, 196204, 245255, 392408, 490510, 637663, 981020, 1275326, 1962040, 2550652, 3188315, 5101304, 6376630, 12753260, 25506520]

約数ペア:

[(1, 25506520), (2, 12753260), (4, 6376630), (5, 5101304), (8, 3188315), (10, 2550652), (13, 1962040), (20, 1275326), (26, 981020), (40, 637663), (52, 490510), (65, 392408), (104, 245255), (130, 196204), (181, 140920), (260, 98102), (271, 94120), (362, 70460), (520, 49051), (542, 47060), (724, 35230), (905, 28184), (1084, 23530), (1355, 18824), (1448, 17615), (1810, 14092), (2168, 11765), (2353, 10840), (2710, 9412), (3523, 7240), (3620, 7046), (4706, 5420)]