31105980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:204

約数の個数: 144

約数和(自身を含む): 100245600

約数和(自身を除く): 69139620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 59, 60, 87, 90, 101, 116, 118, 145, 174, 177, 180, 202, 236, 261, 290, 295, 303, 348, 354, 404, 435, 505, 522, 531, 580, 590, 606, 708, 870, 885, 909, 1010, 1044, 1062, 1180, 1212, 1305, 1515, 1711, 1740, 1770, 1818, 2020, 2124, 2610, 2655, 2929, 3030, 3422, 3540, 3636, 4545, 5133, 5220, 5310, 5858, 5959, 6060, 6844, 8555, 8787, 9090, 10266, 10620, 11716, 11918, 14645, 15399, 17110, 17574, 17877, 18180, 20532, 23836, 25665, 26361, 29290, 29795, 30798, 34220, 35148, 35754, 43935, 51330, 52722, 53631, 58580, 59590, 61596, 71508, 76995, 87870, 89385, 102660, 105444, 107262, 119180, 131805, 153990, 172811, 175740, 178770, 214524, 263610, 268155, 307980, 345622, 357540, 518433, 527220, 536310, 691244, 864055, 1036866, 1072620, 1555299, 1728110, 2073732, 2592165, 3110598, 3456220, 5184330, 6221196, 7776495, 10368660, 15552990, 31105980]

約数ペア:

[(1, 31105980), (2, 15552990), (3, 10368660), (4, 7776495), (5, 6221196), (6, 5184330), (9, 3456220), (10, 3110598), (12, 2592165), (15, 2073732), (18, 1728110), (20, 1555299), (29, 1072620), (30, 1036866), (36, 864055), (45, 691244), (58, 536310), (59, 527220), (60, 518433), (87, 357540), (90, 345622), (101, 307980), (116, 268155), (118, 263610), (145, 214524), (174, 178770), (177, 175740), (180, 172811), (202, 153990), (236, 131805), (261, 119180), (290, 107262), (295, 105444), (303, 102660), (348, 89385), (354, 87870), (404, 76995), (435, 71508), (505, 61596), (522, 59590), (531, 58580), (580, 53631), (590, 52722), (606, 51330), (708, 43935), (870, 35754), (885, 35148), (909, 34220), (1010, 30798), (1044, 29795), (1062, 29290), (1180, 26361), (1212, 25665), (1305, 23836), (1515, 20532), (1711, 18180), (1740, 17877), (1770, 17574), (1818, 17110), (2020, 15399), (2124, 14645), (2610, 11918), (2655, 11716), (2929, 10620), (3030, 10266), (3422, 9090), (3540, 8787), (3636, 8555), (4545, 6844), (5133, 6060), (5220, 5959), (5310, 5858)]