81244340

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{39439}}^1$

素因数の和:39551

約数の個数: 24

約数和(自身を含む): 172273920

約数和(自身を除く): 91029580

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 39439, 78878, 157756, 197195, 394390, 788780, 4062217, 8124434, 16248868, 20311085, 40622170, 81244340]

約数ペア:

[(1, 81244340), (2, 40622170), (4, 20311085), (5, 16248868), (10, 8124434), (20, 4062217), (103, 788780), (206, 394390), (412, 197195), (515, 157756), (1030, 78878), (2060, 39439)]