163343920

素因数分解:

$2^4\times 5^1\times {\mathrm{521}}^1\times {\mathrm{3919}}^1$

素因数の和:4453

約数の個数: 40

約数和(自身を含む): 380600640

約数和(自身を除く): 217256720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 521, 1042, 2084, 2605, 3919, 4168, 5210, 7838, 8336, 10420, 15676, 19595, 20840, 31352, 39190, 41680, 62704, 78380, 156760, 313520, 2041799, 4083598, 8167196, 10208995, 16334392, 20417990, 32668784, 40835980, 81671960, 163343920]

約数ペア:

[(1, 163343920), (2, 81671960), (4, 40835980), (5, 32668784), (8, 20417990), (10, 16334392), (16, 10208995), (20, 8167196), (40, 4083598), (80, 2041799), (521, 313520), (1042, 156760), (2084, 78380), (2605, 62704), (3919, 41680), (4168, 39190), (5210, 31352), (7838, 20840), (8336, 19595), (10420, 15676)]