18189375

素因数分解:

$3^1\times 5^4\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:221

約数の個数: 40

約数和(自身を含む): 30927600

約数和(自身を除く): 12738225

約数列:

[1, 3, 5, 15, 25, 75, 89, 109, 125, 267, 327, 375, 445, 545, 625, 1335, 1635, 1875, 2225, 2725, 6675, 8175, 9701, 11125, 13625, 29103, 33375, 40875, 48505, 55625, 68125, 145515, 166875, 204375, 242525, 727575, 1212625, 3637875, 6063125, 18189375]

約数ペア:

[(1, 18189375), (3, 6063125), (5, 3637875), (15, 1212625), (25, 727575), (75, 242525), (89, 204375), (109, 166875), (125, 145515), (267, 68125), (327, 55625), (375, 48505), (445, 40875), (545, 33375), (625, 29103), (1335, 13625), (1635, 11125), (1875, 9701), (2225, 8175), (2725, 6675)]