21972640

素因数分解:

$2^5\times 5^1\times {\mathrm{191}}^1\times {\mathrm{719}}^1$

素因数の和:925

約数の個数: 48

約数和(自身を含む): 52254720

約数和(自身を除く): 30282080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 191, 382, 719, 764, 955, 1438, 1528, 1910, 2876, 3056, 3595, 3820, 5752, 6112, 7190, 7640, 11504, 14380, 15280, 23008, 28760, 30560, 57520, 115040, 137329, 274658, 549316, 686645, 1098632, 1373290, 2197264, 2746580, 4394528, 5493160, 10986320, 21972640]

約数ペア:

[(1, 21972640), (2, 10986320), (4, 5493160), (5, 4394528), (8, 2746580), (10, 2197264), (16, 1373290), (20, 1098632), (32, 686645), (40, 549316), (80, 274658), (160, 137329), (191, 115040), (382, 57520), (719, 30560), (764, 28760), (955, 23008), (1438, 15280), (1528, 14380), (1910, 11504), (2876, 7640), (3056, 7190), (3595, 6112), (3820, 5752)]