21946160

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{691}}^1$

素因数の和:1101

約数の個数: 40

約数和(自身を含む): 51227376

約数和(自身を除く): 29281216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 691, 794, 1382, 1588, 1985, 2764, 3176, 3455, 3970, 5528, 6352, 6910, 7940, 11056, 13820, 15880, 27640, 31760, 55280, 274327, 548654, 1097308, 1371635, 2194616, 2743270, 4389232, 5486540, 10973080, 21946160]

約数ペア:

[(1, 21946160), (2, 10973080), (4, 5486540), (5, 4389232), (8, 2743270), (10, 2194616), (16, 1371635), (20, 1097308), (40, 548654), (80, 274327), (397, 55280), (691, 31760), (794, 27640), (1382, 15880), (1588, 13820), (1985, 11056), (2764, 7940), (3176, 6910), (3455, 6352), (3970, 5528)]