129123760

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{39367}}^1$

素因数の和:39421

約数の個数: 40

約数和(自身を含む): 307542816

約数和(自身を除く): 178419056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 39367, 78734, 157468, 196835, 314936, 393670, 629872, 787340, 1574680, 1614047, 3149360, 3228094, 6456188, 8070235, 12912376, 16140470, 25824752, 32280940, 64561880, 129123760]

約数ペア:

[(1, 129123760), (2, 64561880), (4, 32280940), (5, 25824752), (8, 16140470), (10, 12912376), (16, 8070235), (20, 6456188), (40, 3228094), (41, 3149360), (80, 1614047), (82, 1574680), (164, 787340), (205, 629872), (328, 393670), (410, 314936), (656, 196835), (820, 157468), (1640, 78734), (3280, 39367)]