18116875

素因数分解:

$5^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:169

約数の個数: 40

約数和(自身を含む): 26766432

約数和(自身を除く): 8649557

約数列:

[1, 5, 7, 25, 35, 41, 101, 125, 175, 205, 287, 505, 625, 707, 875, 1025, 1435, 2525, 3535, 4141, 4375, 5125, 7175, 12625, 17675, 20705, 25625, 28987, 35875, 63125, 88375, 103525, 144935, 179375, 441875, 517625, 724675, 2588125, 3623375, 18116875]

約数ペア:

[(1, 18116875), (5, 3623375), (7, 2588125), (25, 724675), (35, 517625), (41, 441875), (101, 179375), (125, 144935), (175, 103525), (205, 88375), (287, 63125), (505, 35875), (625, 28987), (707, 25625), (875, 20705), (1025, 17675), (1435, 12625), (2525, 7175), (3535, 5125), (4141, 4375)]