208989920

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{18397}}^1$

素因数の和:18483

約数の個数: 48

約数和(自身を含む): 500719968

約数和(自身を除く): 291730048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2840, 5680, 11360, 18397, 36794, 73588, 91985, 147176, 183970, 294352, 367940, 588704, 735880, 1306187, 1471760, 2612374, 2943520, 5224748, 6530935, 10449496, 13061870, 20898992, 26123740, 41797984, 52247480, 104494960, 208989920]

約数ペア:

[(1, 208989920), (2, 104494960), (4, 52247480), (5, 41797984), (8, 26123740), (10, 20898992), (16, 13061870), (20, 10449496), (32, 6530935), (40, 5224748), (71, 2943520), (80, 2612374), (142, 1471760), (160, 1306187), (284, 735880), (355, 588704), (568, 367940), (710, 294352), (1136, 183970), (1420, 147176), (2272, 91985), (2840, 73588), (5680, 36794), (11360, 18397)]