1640240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:150

約数の個数: 80

約数和(自身を含む): 4553280

約数和(自身を除く): 2913040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 101, 112, 116, 140, 145, 202, 203, 232, 280, 290, 404, 406, 464, 505, 560, 580, 707, 808, 812, 1010, 1015, 1160, 1414, 1616, 1624, 2020, 2030, 2320, 2828, 2929, 3248, 3535, 4040, 4060, 5656, 5858, 7070, 8080, 8120, 11312, 11716, 14140, 14645, 16240, 20503, 23432, 28280, 29290, 41006, 46864, 56560, 58580, 82012, 102515, 117160, 164024, 205030, 234320, 328048, 410060, 820120, 1640240]

約数ペア:

[(1, 1640240), (2, 820120), (4, 410060), (5, 328048), (7, 234320), (8, 205030), (10, 164024), (14, 117160), (16, 102515), (20, 82012), (28, 58580), (29, 56560), (35, 46864), (40, 41006), (56, 29290), (58, 28280), (70, 23432), (80, 20503), (101, 16240), (112, 14645), (116, 14140), (140, 11716), (145, 11312), (202, 8120), (203, 8080), (232, 7070), (280, 5858), (290, 5656), (404, 4060), (406, 4040), (464, 3535), (505, 3248), (560, 2929), (580, 2828), (707, 2320), (808, 2030), (812, 2020), (1010, 1624), (1015, 1616), (1160, 1414)]