21641494

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{81359}}^1$

素因数の和:81387

約数の個数: 16

約数和(自身を含む): 39052800

約数和(自身を除く): 17411306

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 81359, 162718, 569513, 1139026, 1545821, 3091642, 10820747, 21641494]

約数ペア:

[(1, 21641494), (2, 10820747), (7, 3091642), (14, 1545821), (19, 1139026), (38, 569513), (133, 162718), (266, 81359)]