18781125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 35493120

約数和(自身を除く): 16711995

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 125, 145, 157, 165, 275, 319, 375, 435, 471, 725, 785, 825, 957, 1375, 1595, 1727, 2175, 2355, 3625, 3925, 4125, 4553, 4785, 5181, 7975, 8635, 10875, 11775, 13659, 19625, 22765, 23925, 25905, 39875, 43175, 50083, 58875, 68295, 113825, 119625, 129525, 150249, 215875, 250415, 341475, 569125, 647625, 751245, 1252075, 1707375, 3756225, 6260375, 18781125]

約数ペア:

[(1, 18781125), (3, 6260375), (5, 3756225), (11, 1707375), (15, 1252075), (25, 751245), (29, 647625), (33, 569125), (55, 341475), (75, 250415), (87, 215875), (125, 150249), (145, 129525), (157, 119625), (165, 113825), (275, 68295), (319, 58875), (375, 50083), (435, 43175), (471, 39875), (725, 25905), (785, 23925), (825, 22765), (957, 19625), (1375, 13659), (1595, 11775), (1727, 10875), (2175, 8635), (2355, 7975), (3625, 5181), (3925, 4785), (4125, 4553)]