81233140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{238921}}^1$

素因数の和:238947

約数の個数: 24

約数和(自身を含む): 180625032

約数和(自身を除く): 99391892

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 238921, 477842, 955684, 1194605, 2389210, 4061657, 4778420, 8123314, 16246628, 20308285, 40616570, 81233140]

約数ペア:

[(1, 81233140), (2, 40616570), (4, 20308285), (5, 16246628), (10, 8123314), (17, 4778420), (20, 4061657), (34, 2389210), (68, 1194605), (85, 955684), (170, 477842), (340, 238921)]