20389290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{39979}}^1$

素因数の和:40006

約数の個数: 32

約数和(自身を含む): 51814080

約数和(自身を除く): 31424790

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 255, 510, 39979, 79958, 119937, 199895, 239874, 399790, 599685, 679643, 1199370, 1359286, 2038929, 3398215, 4077858, 6796430, 10194645, 20389290]

約数ペア:

[(1, 20389290), (2, 10194645), (3, 6796430), (5, 4077858), (6, 3398215), (10, 2038929), (15, 1359286), (17, 1199370), (30, 679643), (34, 599685), (51, 399790), (85, 239874), (102, 199895), (170, 119937), (255, 79958), (510, 39979)]