21251560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48299}}^1$

素因数の和:48321

約数の個数: 32

約数和(自身を含む): 52164000

約数和(自身を除く): 30912440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48299, 96598, 193196, 241495, 386392, 482990, 531289, 965980, 1062578, 1931960, 2125156, 2656445, 4250312, 5312890, 10625780, 21251560]

約数ペア:

[(1, 21251560), (2, 10625780), (4, 5312890), (5, 4250312), (8, 2656445), (10, 2125156), (11, 1931960), (20, 1062578), (22, 965980), (40, 531289), (44, 482990), (55, 386392), (88, 241495), (110, 193196), (220, 96598), (440, 48299)]