31210840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19031}}^1$

素因数の和:19083

約数の個数: 32

約数和(自身を含む): 71940960

約数和(自身を除く): 40730120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19031, 38062, 76124, 95155, 152248, 190310, 380620, 761240, 780271, 1560542, 3121084, 3901355, 6242168, 7802710, 15605420, 31210840]

約数ペア:

[(1, 31210840), (2, 15605420), (4, 7802710), (5, 6242168), (8, 3901355), (10, 3121084), (20, 1560542), (40, 780271), (41, 761240), (82, 380620), (164, 190310), (205, 152248), (328, 95155), (410, 76124), (820, 38062), (1640, 19031)]