220128520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{1571}}^1$

素因数の和:1726

約数の個数: 64

約数和(自身を含む): 516119040

約数和(自身を除く): 295990520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 113, 124, 155, 226, 248, 310, 452, 565, 620, 904, 1130, 1240, 1571, 2260, 3142, 3503, 4520, 6284, 7006, 7855, 12568, 14012, 15710, 17515, 28024, 31420, 35030, 48701, 62840, 70060, 97402, 140120, 177523, 194804, 243505, 355046, 389608, 487010, 710092, 887615, 974020, 1420184, 1775230, 1948040, 3550460, 5503213, 7100920, 11006426, 22012852, 27516065, 44025704, 55032130, 110064260, 220128520]

約数ペア:

[(1, 220128520), (2, 110064260), (4, 55032130), (5, 44025704), (8, 27516065), (10, 22012852), (20, 11006426), (31, 7100920), (40, 5503213), (62, 3550460), (113, 1948040), (124, 1775230), (155, 1420184), (226, 974020), (248, 887615), (310, 710092), (452, 487010), (565, 389608), (620, 355046), (904, 243505), (1130, 194804), (1240, 177523), (1571, 140120), (2260, 97402), (3142, 70060), (3503, 62840), (4520, 48701), (6284, 35030), (7006, 31420), (7855, 28024), (12568, 17515), (14012, 15710)]