21091391

素因数分解:

${\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:358

約数の個数: 16

約数和(自身を含む): 22809600

約数和(自身を除く): 1718209

約数列:

[1, 23, 47, 109, 179, 1081, 2507, 4117, 5123, 8413, 19511, 117829, 193499, 448753, 917017, 21091391]

約数ペア:

[(1, 21091391), (23, 917017), (47, 448753), (109, 193499), (179, 117829), (1081, 19511), (2507, 8413), (4117, 5123)]