20157725

素因数分解:

$5^2\times 7^1\times {\mathrm{229}}^1\times {\mathrm{503}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 28748160

約数和(自身を除く): 8590435

約数列:

[1, 5, 7, 25, 35, 175, 229, 503, 1145, 1603, 2515, 3521, 5725, 8015, 12575, 17605, 40075, 88025, 115187, 575935, 806309, 2879675, 4031545, 20157725]

約数ペア:

[(1, 20157725), (5, 4031545), (7, 2879675), (25, 806309), (35, 575935), (175, 115187), (229, 88025), (503, 40075), (1145, 17605), (1603, 12575), (2515, 8015), (3521, 5725)]