20120560

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5849}}^1$

素因数の和:5905

約数の個数: 40

約数和(自身を含む): 47876400

約数和(自身を除く): 27755840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5849, 11698, 23396, 29245, 46792, 58490, 93584, 116980, 233960, 251507, 467920, 503014, 1006028, 1257535, 2012056, 2515070, 4024112, 5030140, 10060280, 20120560]

約数ペア:

[(1, 20120560), (2, 10060280), (4, 5030140), (5, 4024112), (8, 2515070), (10, 2012056), (16, 1257535), (20, 1006028), (40, 503014), (43, 467920), (80, 251507), (86, 233960), (172, 116980), (215, 93584), (344, 58490), (430, 46792), (688, 29245), (860, 23396), (1720, 11698), (3440, 5849)]