31396815

素因数分解:

$3^5\times 5^1\times {\mathrm{25841}}^1$

素因数の和:25861

約数の個数: 24

約数和(自身を含む): 56438928

約数和(自身を除く): 25042113

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 25841, 77523, 129205, 232569, 387615, 697707, 1162845, 2093121, 3488535, 6279363, 10465605, 31396815]

約数ペア:

[(1, 31396815), (3, 10465605), (5, 6279363), (9, 3488535), (15, 2093121), (27, 1162845), (45, 697707), (81, 387615), (135, 232569), (243, 129205), (405, 77523), (1215, 25841)]