21979750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6763}}^1$

素因数の和:6793

約数の個数: 32

約数和(自身を含む): 44317728

約数和(自身を除く): 22337978

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6763, 13526, 33815, 67630, 87919, 169075, 175838, 338150, 439595, 845375, 879190, 1690750, 2197975, 4395950, 10989875, 21979750]

約数ペア:

[(1, 21979750), (2, 10989875), (5, 4395950), (10, 2197975), (13, 1690750), (25, 879190), (26, 845375), (50, 439595), (65, 338150), (125, 175838), (130, 169075), (250, 87919), (325, 67630), (650, 33815), (1625, 13526), (3250, 6763)]