20070540140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{890441}}^1$

素因数の和:890487

約数の個数: 72

約数和(自身を含む): 51161235552

約数和(自身を除く): 31090695412

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1610, 2254, 3220, 4508, 5635, 11270, 22540, 890441, 1780882, 3561764, 4452205, 6233087, 8904410, 12466174, 17808820, 20480143, 24932348, 31165435, 40960286, 43631609, 62330870, 81920572, 87263218, 102400715, 124661740, 143361001, 174526436, 204801430, 218158045, 286722002, 409602860, 436316090, 573444004, 716805005, 872632180, 1003527007, 1433610010, 2007054014, 2867220020, 4014108028, 5017635035, 10035270070, 20070540140]

約数ペア:

[(1, 20070540140), (2, 10035270070), (4, 5017635035), (5, 4014108028), (7, 2867220020), (10, 2007054014), (14, 1433610010), (20, 1003527007), (23, 872632180), (28, 716805005), (35, 573444004), (46, 436316090), (49, 409602860), (70, 286722002), (92, 218158045), (98, 204801430), (115, 174526436), (140, 143361001), (161, 124661740), (196, 102400715), (230, 87263218), (245, 81920572), (322, 62330870), (460, 43631609), (490, 40960286), (644, 31165435), (805, 24932348), (980, 20480143), (1127, 17808820), (1610, 12466174), (2254, 8904410), (3220, 6233087), (4508, 4452205), (5635, 3561764), (11270, 1780882), (22540, 890441)]