64371640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39251}}^1$

素因数の和:39303

約数の個数: 32

約数和(自身を含む): 148372560

約数和(自身を除く): 84000920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 39251, 78502, 157004, 196255, 314008, 392510, 785020, 1570040, 1609291, 3218582, 6437164, 8046455, 12874328, 16092910, 32185820, 64371640]

約数ペア:

[(1, 64371640), (2, 32185820), (4, 16092910), (5, 12874328), (8, 8046455), (10, 6437164), (20, 3218582), (40, 1609291), (41, 1570040), (82, 785020), (164, 392510), (205, 314008), (328, 196255), (410, 157004), (820, 78502), (1640, 39251)]