21195100

素因数分解:

$2^2\times 5^2\times {\mathrm{181}}^1\times {\mathrm{1171}}^1$

素因数の和:1366

約数の個数: 36

約数和(自身を含む): 46286968

約数和(自身を除く): 25091868

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 181, 362, 724, 905, 1171, 1810, 2342, 3620, 4525, 4684, 5855, 9050, 11710, 18100, 23420, 29275, 58550, 117100, 211951, 423902, 847804, 1059755, 2119510, 4239020, 5298775, 10597550, 21195100]

約数ペア:

[(1, 21195100), (2, 10597550), (4, 5298775), (5, 4239020), (10, 2119510), (20, 1059755), (25, 847804), (50, 423902), (100, 211951), (181, 117100), (362, 58550), (724, 29275), (905, 23420), (1171, 18100), (1810, 11710), (2342, 9050), (3620, 5855), (4525, 4684)]