820120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:148

約数の個数: 64

約数和(自身を含む): 2203200

約数和(自身を除く): 1383080

約数列:

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

約数ペア:

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