21581736

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{81749}}^1$

素因数の和:81769

約数の個数: 32

約数和(自身を含む): 58860000

約数和(自身を除く): 37278264

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 264, 81749, 163498, 245247, 326996, 490494, 653992, 899239, 980988, 1798478, 1961976, 2697717, 3596956, 5395434, 7193912, 10790868, 21581736]

約数ペア:

[(1, 21581736), (2, 10790868), (3, 7193912), (4, 5395434), (6, 3596956), (8, 2697717), (11, 1961976), (12, 1798478), (22, 980988), (24, 899239), (33, 653992), (44, 490494), (66, 326996), (88, 245247), (132, 163498), (264, 81749)]