20050996720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{85571}}^1$

素因数の和:85714

約数の個数: 80

約数和(自身を含む): 48704159520

約数和(自身を除く): 28653162800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 101, 116, 145, 202, 232, 290, 404, 464, 505, 580, 808, 1010, 1160, 1616, 2020, 2320, 2929, 4040, 5858, 8080, 11716, 14645, 23432, 29290, 46864, 58580, 85571, 117160, 171142, 234320, 342284, 427855, 684568, 855710, 1369136, 1711420, 2481559, 3422840, 4963118, 6845680, 8642671, 9926236, 12407795, 17285342, 19852472, 24815590, 34570684, 39704944, 43213355, 49631180, 69141368, 86426710, 99262360, 138282736, 172853420, 198524720, 250637459, 345706840, 501274918, 691413680, 1002549836, 1253187295, 2005099672, 2506374590, 4010199344, 5012749180, 10025498360, 20050996720]

約数ペア:

[(1, 20050996720), (2, 10025498360), (4, 5012749180), (5, 4010199344), (8, 2506374590), (10, 2005099672), (16, 1253187295), (20, 1002549836), (29, 691413680), (40, 501274918), (58, 345706840), (80, 250637459), (101, 198524720), (116, 172853420), (145, 138282736), (202, 99262360), (232, 86426710), (290, 69141368), (404, 49631180), (464, 43213355), (505, 39704944), (580, 34570684), (808, 24815590), (1010, 19852472), (1160, 17285342), (1616, 12407795), (2020, 9926236), (2320, 8642671), (2929, 6845680), (4040, 4963118), (5858, 3422840), (8080, 2481559), (11716, 1711420), (14645, 1369136), (23432, 855710), (29290, 684568), (46864, 427855), (58580, 342284), (85571, 234320), (117160, 171142)]