20248875

素因数分解:

$3^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{439}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 37477440

約数和(自身を除く): 17228565

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 125, 205, 225, 369, 375, 439, 615, 1025, 1125, 1317, 1845, 2195, 3075, 3951, 5125, 6585, 9225, 10975, 15375, 17999, 19755, 32925, 46125, 53997, 54875, 89995, 98775, 161991, 164625, 269985, 449975, 493875, 809955, 1349925, 2249875, 4049775, 6749625, 20248875]

約数ペア:

[(1, 20248875), (3, 6749625), (5, 4049775), (9, 2249875), (15, 1349925), (25, 809955), (41, 493875), (45, 449975), (75, 269985), (123, 164625), (125, 161991), (205, 98775), (225, 89995), (369, 54875), (375, 53997), (439, 46125), (615, 32925), (1025, 19755), (1125, 17999), (1317, 15375), (1845, 10975), (2195, 9225), (3075, 6585), (3951, 5125)]