21106900

素因数分解:

$2^2\times 5^2\times {\mathrm{83}}^1\times {\mathrm{2543}}^1$

素因数の和:2640

約数の個数: 36

約数和(自身を含む): 46372032

約数和(自身を除く): 25265132

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 83, 100, 166, 332, 415, 830, 1660, 2075, 2543, 4150, 5086, 8300, 10172, 12715, 25430, 50860, 63575, 127150, 211069, 254300, 422138, 844276, 1055345, 2110690, 4221380, 5276725, 10553450, 21106900]

約数ペア:

[(1, 21106900), (2, 10553450), (4, 5276725), (5, 4221380), (10, 2110690), (20, 1055345), (25, 844276), (50, 422138), (83, 254300), (100, 211069), (166, 127150), (332, 63575), (415, 50860), (830, 25430), (1660, 12715), (2075, 10172), (2543, 8300), (4150, 5086)]