80571790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{19993}}^1$

素因数の和:20044

約数の個数: 32

約数和(自身を含む): 161231616

約数和(自身を除く): 80659826

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 19993, 39986, 99965, 199930, 259909, 519818, 619783, 1239566, 1299545, 2599090, 3098915, 6197830, 8057179, 16114358, 40285895, 80571790]

約数ペア:

[(1, 80571790), (2, 40285895), (5, 16114358), (10, 8057179), (13, 6197830), (26, 3098915), (31, 2599090), (62, 1299545), (65, 1239566), (130, 619783), (155, 519818), (310, 259909), (403, 199930), (806, 99965), (2015, 39986), (4030, 19993)]