31280991

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{773}}^1$

素因数の和:871

約数の個数: 32

約数和(自身を含む): 49932288

約数和(自身を除く): 18651297

約数列:

[1, 3, 7, 21, 41, 47, 123, 141, 287, 329, 773, 861, 987, 1927, 2319, 5411, 5781, 13489, 16233, 31693, 36331, 40467, 95079, 108993, 221851, 254317, 665553, 762951, 1489571, 4468713, 10426997, 31280991]

約数ペア:

[(1, 31280991), (3, 10426997), (7, 4468713), (21, 1489571), (41, 762951), (47, 665553), (123, 254317), (141, 221851), (287, 108993), (329, 95079), (773, 40467), (861, 36331), (987, 31693), (1927, 16233), (2319, 13489), (5411, 5781)]