21755528

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:585

約数の個数: 32

約数和(自身を含む): 41943000

約数和(自身を除く): 20187472

約数列:

[1, 2, 4, 8, 61, 109, 122, 218, 244, 409, 436, 488, 818, 872, 1636, 3272, 6649, 13298, 24949, 26596, 44581, 49898, 53192, 89162, 99796, 178324, 199592, 356648, 2719441, 5438882, 10877764, 21755528]

約数ペア:

[(1, 21755528), (2, 10877764), (4, 5438882), (8, 2719441), (61, 356648), (109, 199592), (122, 178324), (218, 99796), (244, 89162), (409, 53192), (436, 49898), (488, 44581), (818, 26596), (872, 24949), (1636, 13298), (3272, 6649)]