21268900

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{4013}}^1$

素因数の和:4080

約数の個数: 36

約数和(自身を含む): 47036052

約数和(自身を除く): 25767152

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 212, 265, 530, 1060, 1325, 2650, 4013, 5300, 8026, 16052, 20065, 40130, 80260, 100325, 200650, 212689, 401300, 425378, 850756, 1063445, 2126890, 4253780, 5317225, 10634450, 21268900]

約数ペア:

[(1, 21268900), (2, 10634450), (4, 5317225), (5, 4253780), (10, 2126890), (20, 1063445), (25, 850756), (50, 425378), (53, 401300), (100, 212689), (106, 200650), (212, 100325), (265, 80260), (530, 40130), (1060, 20065), (1325, 16052), (2650, 8026), (4013, 5300)]