21985831

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{3119}}^1$

素因数の和:3198

約数の個数: 16

約数和(自身を含む): 26956800

約数和(自身を除く): 4970969

約数列:

[1, 7, 19, 53, 133, 371, 1007, 3119, 7049, 21833, 59261, 165307, 414827, 1157149, 3140833, 21985831]

約数ペア:

[(1, 21985831), (7, 3140833), (19, 1157149), (53, 414827), (133, 165307), (371, 59261), (1007, 21833), (3119, 7049)]