80020040

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15271}}^1$

素因数の和:15413

約数の個数: 32

約数和(自身を含む): 181431360

約数和(自身を除く): 101411320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 15271, 30542, 61084, 76355, 122168, 152710, 305420, 610840, 2000501, 4001002, 8002004, 10002505, 16004008, 20005010, 40010020, 80020040]

約数ペア:

[(1, 80020040), (2, 40010020), (4, 20005010), (5, 16004008), (8, 10002505), (10, 8002004), (20, 4001002), (40, 2000501), (131, 610840), (262, 305420), (524, 152710), (655, 122168), (1048, 76355), (1310, 61084), (2620, 30542), (5240, 15271)]