87749020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1\times {\mathrm{947}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 190639008

約数和(自身を除く): 102889988

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 113, 164, 205, 226, 410, 452, 565, 820, 947, 1130, 1894, 2260, 3788, 4633, 4735, 9266, 9470, 18532, 18940, 23165, 38827, 46330, 77654, 92660, 107011, 155308, 194135, 214022, 388270, 428044, 535055, 776540, 1070110, 2140220, 4387451, 8774902, 17549804, 21937255, 43874510, 87749020]

約数ペア:

[(1, 87749020), (2, 43874510), (4, 21937255), (5, 17549804), (10, 8774902), (20, 4387451), (41, 2140220), (82, 1070110), (113, 776540), (164, 535055), (205, 428044), (226, 388270), (410, 214022), (452, 194135), (565, 155308), (820, 107011), (947, 92660), (1130, 77654), (1894, 46330), (2260, 38827), (3788, 23165), (4633, 18940), (4735, 18532), (9266, 9470)]