21921387

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{1163}}^1$

素因数の和:1330

約数の個数: 16

約数和(自身を含む): 30021888

約数和(自身を除く): 8100501

約数列:

[1, 3, 61, 103, 183, 309, 1163, 3489, 6283, 18849, 70943, 119789, 212829, 359367, 7307129, 21921387]

約数ペア:

[(1, 21921387), (3, 7307129), (61, 359367), (103, 212829), (183, 119789), (309, 70943), (1163, 18849), (3489, 6283)]