156628840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{421}}^1$

素因数の和:634

約数の個数: 64

約数和(自身を含む): 360961920

約数和(自身を除く): 204333080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 131, 142, 262, 284, 355, 421, 524, 568, 655, 710, 842, 1048, 1310, 1420, 1684, 2105, 2620, 2840, 3368, 4210, 5240, 8420, 9301, 16840, 18602, 29891, 37204, 46505, 55151, 59782, 74408, 93010, 110302, 119564, 149455, 186020, 220604, 239128, 275755, 298910, 372040, 441208, 551510, 597820, 1103020, 1195640, 2206040, 3915721, 7831442, 15662884, 19578605, 31325768, 39157210, 78314420, 156628840]

約数ペア:

[(1, 156628840), (2, 78314420), (4, 39157210), (5, 31325768), (8, 19578605), (10, 15662884), (20, 7831442), (40, 3915721), (71, 2206040), (131, 1195640), (142, 1103020), (262, 597820), (284, 551510), (355, 441208), (421, 372040), (524, 298910), (568, 275755), (655, 239128), (710, 220604), (842, 186020), (1048, 149455), (1310, 119564), (1420, 110302), (1684, 93010), (2105, 74408), (2620, 59782), (2840, 55151), (3368, 46505), (4210, 37204), (5240, 29891), (8420, 18602), (9301, 16840)]