28161875

素因数分解:

$5^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:225

約数の個数: 40

約数和(自身を含む): 41461728

約数和(自身を除く): 13299853

約数列:

[1, 5, 7, 25, 35, 41, 125, 157, 175, 205, 287, 625, 785, 875, 1025, 1099, 1435, 3925, 4375, 5125, 5495, 6437, 7175, 19625, 25625, 27475, 32185, 35875, 45059, 98125, 137375, 160925, 179375, 225295, 686875, 804625, 1126475, 4023125, 5632375, 28161875]

約数ペア:

[(1, 28161875), (5, 5632375), (7, 4023125), (25, 1126475), (35, 804625), (41, 686875), (125, 225295), (157, 179375), (175, 160925), (205, 137375), (287, 98125), (625, 45059), (785, 35875), (875, 32185), (1025, 27475), (1099, 25625), (1435, 19625), (3925, 7175), (4375, 6437), (5125, 5495)]