31390215

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1187}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 52690176

約数和(自身を除く): 21299961

約数列:

[1, 3, 5, 15, 41, 43, 123, 129, 205, 215, 615, 645, 1187, 1763, 3561, 5289, 5935, 8815, 17805, 26445, 48667, 51041, 146001, 153123, 243335, 255205, 730005, 765615, 2092681, 6278043, 10463405, 31390215]

約数ペア:

[(1, 31390215), (3, 10463405), (5, 6278043), (15, 2092681), (41, 765615), (43, 730005), (123, 255205), (129, 243335), (205, 153123), (215, 146001), (615, 51041), (645, 48667), (1187, 26445), (1763, 17805), (3561, 8815), (5289, 5935)]