81248780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{238967}}^1$

素因数の和:238993

約数の個数: 24

約数和(自身を含む): 180659808

約数和(自身を除く): 99411028

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 238967, 477934, 955868, 1194835, 2389670, 4062439, 4779340, 8124878, 16249756, 20312195, 40624390, 81248780]

約数ペア:

[(1, 81248780), (2, 40624390), (4, 20312195), (5, 16249756), (10, 8124878), (17, 4779340), (20, 4062439), (34, 2389670), (68, 1194835), (85, 955868), (170, 477934), (340, 238967)]