71650840

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{6659}}^1$

素因数の和:6939

約数の個数: 32

約数和(自身を含む): 161838000

約数和(自身を除く): 90187160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 2152, 2690, 5380, 6659, 10760, 13318, 26636, 33295, 53272, 66590, 133180, 266360, 1791271, 3582542, 7165084, 8956355, 14330168, 17912710, 35825420, 71650840]

約数ペア:

[(1, 71650840), (2, 35825420), (4, 17912710), (5, 14330168), (8, 8956355), (10, 7165084), (20, 3582542), (40, 1791271), (269, 266360), (538, 133180), (1076, 66590), (1345, 53272), (2152, 33295), (2690, 26636), (5380, 13318), (6659, 10760)]