40387420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{65141}}^1$

素因数の和:65181

約数の個数: 24

約数和(自身を含む): 87550848

約数和(自身を除く): 47163428

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 65141, 130282, 260564, 325705, 651410, 1302820, 2019371, 4038742, 8077484, 10096855, 20193710, 40387420]

約数ペア:

[(1, 40387420), (2, 20193710), (4, 10096855), (5, 8077484), (10, 4038742), (20, 2019371), (31, 1302820), (62, 651410), (124, 325705), (155, 260564), (310, 130282), (620, 65141)]