20017927216

素因数分解:

$2^4\times 7^1\times {\mathrm{503}}^1\times {\mathrm{355331}}^1$

素因数の和:355849

約数の個数: 40

約数和(自身を含む): 44413657344

約数和(自身を除く): 24395730128

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 503, 1006, 2012, 3521, 4024, 7042, 8048, 14084, 28168, 56336, 355331, 710662, 1421324, 2487317, 2842648, 4974634, 5685296, 9949268, 19898536, 39797072, 178731493, 357462986, 714925972, 1251120451, 1429851944, 2502240902, 2859703888, 5004481804, 10008963608, 20017927216]

約数ペア:

[(1, 20017927216), (2, 10008963608), (4, 5004481804), (7, 2859703888), (8, 2502240902), (14, 1429851944), (16, 1251120451), (28, 714925972), (56, 357462986), (112, 178731493), (503, 39797072), (1006, 19898536), (2012, 9949268), (3521, 5685296), (4024, 4974634), (7042, 2842648), (8048, 2487317), (14084, 1421324), (28168, 710662), (56336, 355331)]