21970635

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1481}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 37559808

約数和(自身を除く): 15589173

約数列:

[1, 3, 5, 15, 23, 43, 69, 115, 129, 215, 345, 645, 989, 1481, 2967, 4443, 4945, 7405, 14835, 22215, 34063, 63683, 102189, 170315, 191049, 318415, 510945, 955245, 1464709, 4394127, 7323545, 21970635]

約数ペア:

[(1, 21970635), (3, 7323545), (5, 4394127), (15, 1464709), (23, 955245), (43, 510945), (69, 318415), (115, 191049), (129, 170315), (215, 102189), (345, 63683), (645, 34063), (989, 22215), (1481, 14835), (2967, 7405), (4443, 4945)]