20565006640

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^2\times {\mathrm{305663}}^1$

素因数の和:305734

約数の個数: 60

約数和(自身を含む): 49519401984

約数和(自身を除く): 28954395344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 841, 1160, 1682, 2320, 3364, 4205, 6728, 8410, 13456, 16820, 33640, 67280, 305663, 611326, 1222652, 1528315, 2445304, 3056630, 4890608, 6113260, 8864227, 12226520, 17728454, 24453040, 35456908, 44321135, 70913816, 88642270, 141827632, 177284540, 257062583, 354569080, 514125166, 709138160, 1028250332, 1285312915, 2056500664, 2570625830, 4113001328, 5141251660, 10282503320, 20565006640]

約数ペア:

[(1, 20565006640), (2, 10282503320), (4, 5141251660), (5, 4113001328), (8, 2570625830), (10, 2056500664), (16, 1285312915), (20, 1028250332), (29, 709138160), (40, 514125166), (58, 354569080), (80, 257062583), (116, 177284540), (145, 141827632), (232, 88642270), (290, 70913816), (464, 44321135), (580, 35456908), (841, 24453040), (1160, 17728454), (1682, 12226520), (2320, 8864227), (3364, 6113260), (4205, 4890608), (6728, 3056630), (8410, 2445304), (13456, 1528315), (16820, 1222652), (33640, 611326), (67280, 305663)]