20701725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1091}}^1$

素因数の和:1138

約数の個数: 48

約数和(自身を含む): 38997504

約数和(自身を除く): 18295779

約数列:

[1, 3, 5, 11, 15, 23, 25, 33, 55, 69, 75, 115, 165, 253, 275, 345, 575, 759, 825, 1091, 1265, 1725, 3273, 3795, 5455, 6325, 12001, 16365, 18975, 25093, 27275, 36003, 60005, 75279, 81825, 125465, 180015, 276023, 300025, 376395, 627325, 828069, 900075, 1380115, 1881975, 4140345, 6900575, 20701725]

約数ペア:

[(1, 20701725), (3, 6900575), (5, 4140345), (11, 1881975), (15, 1380115), (23, 900075), (25, 828069), (33, 627325), (55, 376395), (69, 300025), (75, 276023), (115, 180015), (165, 125465), (253, 81825), (275, 75279), (345, 60005), (575, 36003), (759, 27275), (825, 25093), (1091, 18975), (1265, 16365), (1725, 12001), (3273, 6325), (3795, 5455)]