2145975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:128

約数の個数: 48

約数和(自身を含む): 3999744

約数和(自身を除く): 1853769

約数列:

[1, 3, 5, 13, 15, 25, 31, 39, 65, 71, 75, 93, 155, 195, 213, 325, 355, 403, 465, 775, 923, 975, 1065, 1209, 1775, 2015, 2201, 2325, 2769, 4615, 5325, 6045, 6603, 10075, 11005, 13845, 23075, 28613, 30225, 33015, 55025, 69225, 85839, 143065, 165075, 429195, 715325, 2145975]

約数ペア:

[(1, 2145975), (3, 715325), (5, 429195), (13, 165075), (15, 143065), (25, 85839), (31, 69225), (39, 55025), (65, 33015), (71, 30225), (75, 28613), (93, 23075), (155, 13845), (195, 11005), (213, 10075), (325, 6603), (355, 6045), (403, 5325), (465, 4615), (775, 2769), (923, 2325), (975, 2201), (1065, 2015), (1209, 1775)]