21456838

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{677}}^1$

素因数の和:768

約数の個数: 32

約数和(自身を含む): 36904896

約数和(自身を除く): 15448058

約数列:

[1, 2, 13, 23, 26, 46, 53, 106, 299, 598, 677, 689, 1219, 1354, 1378, 2438, 8801, 15571, 15847, 17602, 31142, 31694, 35881, 71762, 202423, 404846, 466453, 825263, 932906, 1650526, 10728419, 21456838]

約数ペア:

[(1, 21456838), (2, 10728419), (13, 1650526), (23, 932906), (26, 825263), (46, 466453), (53, 404846), (106, 202423), (299, 71762), (598, 35881), (677, 31694), (689, 31142), (1219, 17602), (1354, 15847), (1378, 15571), (2438, 8801)]