21487697

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{1559}}^1$

素因数の和:1756

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 5469103

約数列:

[1, 7, 11, 77, 179, 1253, 1559, 1969, 10913, 13783, 17149, 120043, 279061, 1953427, 3069671, 21487697]

約数ペア:

[(1, 21487697), (7, 3069671), (11, 1953427), (77, 279061), (179, 120043), (1253, 17149), (1559, 13783), (1969, 10913)]