21217240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48221}}^1$

素因数の和:48243

約数の個数: 32

約数和(自身を含む): 52079760

約数和(自身を除く): 30862520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48221, 96442, 192884, 241105, 385768, 482210, 530431, 964420, 1060862, 1928840, 2121724, 2652155, 4243448, 5304310, 10608620, 21217240]

約数ペア:

[(1, 21217240), (2, 10608620), (4, 5304310), (5, 4243448), (8, 2652155), (10, 2121724), (11, 1928840), (20, 1060862), (22, 964420), (40, 530431), (44, 482210), (55, 385768), (88, 241105), (110, 192884), (220, 96442), (440, 48221)]