388819960

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{35869}}^1$

素因数の和:36151

約数の個数: 32

約数和(自身を含む): 878097600

約数和(自身を除く): 489277640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 10840, 35869, 71738, 143476, 179345, 286952, 358690, 717380, 1434760, 9720499, 19440998, 38881996, 48602495, 77763992, 97204990, 194409980, 388819960]

約数ペア:

[(1, 388819960), (2, 194409980), (4, 97204990), (5, 77763992), (8, 48602495), (10, 38881996), (20, 19440998), (40, 9720499), (271, 1434760), (542, 717380), (1084, 358690), (1355, 286952), (2168, 179345), (2710, 143476), (5420, 71738), (10840, 35869)]