1918781680

素因数分解:

$2^4\times 5^1\times {\mathrm{2621}}^1\times {\mathrm{9151}}^1$

素因数の和:11785

約数の個数: 40

約数和(自身を含む): 4463357184

約数和(自身を除く): 2544575504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2621, 5242, 9151, 10484, 13105, 18302, 20968, 26210, 36604, 41936, 45755, 52420, 73208, 91510, 104840, 146416, 183020, 209680, 366040, 732080, 23984771, 47969542, 95939084, 119923855, 191878168, 239847710, 383756336, 479695420, 959390840, 1918781680]

約数ペア:

[(1, 1918781680), (2, 959390840), (4, 479695420), (5, 383756336), (8, 239847710), (10, 191878168), (16, 119923855), (20, 95939084), (40, 47969542), (80, 23984771), (2621, 732080), (5242, 366040), (9151, 209680), (10484, 183020), (13105, 146416), (18302, 104840), (20968, 91510), (26210, 73208), (36604, 52420), (41936, 45755)]