21491175

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 37810080

約数和(自身を除く): 16318905

約数列:

[1, 3, 5, 15, 25, 29, 41, 75, 87, 123, 145, 205, 241, 435, 615, 723, 725, 1025, 1189, 1205, 2175, 3075, 3567, 3615, 5945, 6025, 6989, 9881, 17835, 18075, 20967, 29643, 29725, 34945, 49405, 89175, 104835, 148215, 174725, 247025, 286549, 524175, 741075, 859647, 1432745, 4298235, 7163725, 21491175]

約数ペア:

[(1, 21491175), (3, 7163725), (5, 4298235), (15, 1432745), (25, 859647), (29, 741075), (41, 524175), (75, 286549), (87, 247025), (123, 174725), (145, 148215), (205, 104835), (241, 89175), (435, 49405), (615, 34945), (723, 29725), (725, 29643), (1025, 20967), (1189, 18075), (1205, 17835), (2175, 9881), (3075, 6989), (3567, 6025), (3615, 5945)]