19977375

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17762145

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 125, 145, 165, 167, 275, 319, 375, 435, 501, 725, 825, 835, 957, 1375, 1595, 1837, 2175, 2505, 3625, 4125, 4175, 4785, 4843, 5511, 7975, 9185, 10875, 12525, 14529, 20875, 23925, 24215, 27555, 39875, 45925, 53273, 62625, 72645, 119625, 121075, 137775, 159819, 229625, 266365, 363225, 605375, 688875, 799095, 1331825, 1816125, 3995475, 6659125, 19977375]

約数ペア:

[(1, 19977375), (3, 6659125), (5, 3995475), (11, 1816125), (15, 1331825), (25, 799095), (29, 688875), (33, 605375), (55, 363225), (75, 266365), (87, 229625), (125, 159819), (145, 137775), (165, 121075), (167, 119625), (275, 72645), (319, 62625), (375, 53273), (435, 45925), (501, 39875), (725, 27555), (825, 24215), (835, 23925), (957, 20875), (1375, 14529), (1595, 12525), (1837, 10875), (2175, 9185), (2505, 7975), (3625, 5511), (4125, 4843), (4175, 4785)]