31380825

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{8539}}^1$

素因数の和:8566

約数の個数: 36

約数和(自身を含む): 60360720

約数和(自身を除く): 28979895

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 147, 175, 245, 525, 735, 1225, 3675, 8539, 25617, 42695, 59773, 128085, 179319, 213475, 298865, 418411, 640425, 896595, 1255233, 1494325, 2092055, 4482975, 6276165, 10460275, 31380825]

約数ペア:

[(1, 31380825), (3, 10460275), (5, 6276165), (7, 4482975), (15, 2092055), (21, 1494325), (25, 1255233), (35, 896595), (49, 640425), (75, 418411), (105, 298865), (147, 213475), (175, 179319), (245, 128085), (525, 59773), (735, 42695), (1225, 25617), (3675, 8539)]