21281848

素因数分解:

$2^3\times 7^1\times {\mathrm{419}}^1\times {\mathrm{907}}^1$

素因数の和:1339

約数の個数: 32

約数和(自身を含む): 45763200

約数和(自身を除く): 24481352

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 419, 838, 907, 1676, 1814, 2933, 3352, 3628, 5866, 6349, 7256, 11732, 12698, 23464, 25396, 50792, 380033, 760066, 1520132, 2660231, 3040264, 5320462, 10640924, 21281848]

約数ペア:

[(1, 21281848), (2, 10640924), (4, 5320462), (7, 3040264), (8, 2660231), (14, 1520132), (28, 760066), (56, 380033), (419, 50792), (838, 25396), (907, 23464), (1676, 12698), (1814, 11732), (2933, 7256), (3352, 6349), (3628, 5866)]