20488570

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{631}}^1$

素因数の和:846

約数の個数: 32

約数和(自身を含む): 39315456

約数和(自身を除く): 18826886

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 191, 382, 631, 955, 1262, 1910, 3155, 3247, 6310, 6494, 10727, 16235, 21454, 32470, 53635, 107270, 120521, 241042, 602605, 1205210, 2048857, 4097714, 10244285, 20488570]

約数ペア:

[(1, 20488570), (2, 10244285), (5, 4097714), (10, 2048857), (17, 1205210), (34, 602605), (85, 241042), (170, 120521), (191, 107270), (382, 53635), (631, 32470), (955, 21454), (1262, 16235), (1910, 10727), (3155, 6494), (3247, 6310)]