21401653

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 26937600

約数和(自身を除く): 5535947

約数列:

[1, 7, 13, 79, 91, 169, 229, 553, 1027, 1183, 1603, 2977, 7189, 13351, 18091, 20839, 38701, 93457, 126637, 235183, 270907, 1646281, 3057379, 21401653]

約数ペア:

[(1, 21401653), (7, 3057379), (13, 1646281), (79, 270907), (91, 235183), (169, 126637), (229, 93457), (553, 38701), (1027, 20839), (1183, 18091), (1603, 13351), (2977, 7189)]