20538375

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 40255488

約数和(自身を除く): 19717113

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 125, 143, 165, 195, 275, 325, 375, 383, 429, 715, 825, 975, 1149, 1375, 1625, 1915, 2145, 3575, 4125, 4213, 4875, 4979, 5745, 9575, 10725, 12639, 14937, 17875, 21065, 24895, 28725, 47875, 53625, 54769, 63195, 74685, 105325, 124475, 143625, 164307, 273845, 315975, 373425, 526625, 622375, 821535, 1369225, 1579875, 1867125, 4107675, 6846125, 20538375]

約数ペア:

[(1, 20538375), (3, 6846125), (5, 4107675), (11, 1867125), (13, 1579875), (15, 1369225), (25, 821535), (33, 622375), (39, 526625), (55, 373425), (65, 315975), (75, 273845), (125, 164307), (143, 143625), (165, 124475), (195, 105325), (275, 74685), (325, 63195), (375, 54769), (383, 53625), (429, 47875), (715, 28725), (825, 24895), (975, 21065), (1149, 17875), (1375, 14937), (1625, 12639), (1915, 10725), (2145, 9575), (3575, 5745), (4125, 4979), (4213, 4875)]