21798680

素因数分解:

$2^3\times 5^1\times {\mathrm{593}}^1\times {\mathrm{919}}^1$

素因数の和:1523

約数の個数: 32

約数和(自身を含む): 49183200

約数和(自身を除く): 27384520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 593, 919, 1186, 1838, 2372, 2965, 3676, 4595, 4744, 5930, 7352, 9190, 11860, 18380, 23720, 36760, 544967, 1089934, 2179868, 2724835, 4359736, 5449670, 10899340, 21798680]

約数ペア:

[(1, 21798680), (2, 10899340), (4, 5449670), (5, 4359736), (8, 2724835), (10, 2179868), (20, 1089934), (40, 544967), (593, 36760), (919, 23720), (1186, 18380), (1838, 11860), (2372, 9190), (2965, 7352), (3676, 5930), (4595, 4744)]