21677940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1451}}^1$

素因数の和:1549

約数の個数: 72

約数和(自身を含む): 66594528

約数和(自身を除く): 44916588

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1451, 1494, 1660, 2490, 2902, 2988, 3735, 4353, 4980, 5804, 7255, 7470, 8706, 13059, 14510, 14940, 17412, 21765, 26118, 29020, 43530, 52236, 65295, 87060, 120433, 130590, 240866, 261180, 361299, 481732, 602165, 722598, 1083897, 1204330, 1445196, 1806495, 2167794, 2408660, 3612990, 4335588, 5419485, 7225980, 10838970, 21677940]

約数ペア:

[(1, 21677940), (2, 10838970), (3, 7225980), (4, 5419485), (5, 4335588), (6, 3612990), (9, 2408660), (10, 2167794), (12, 1806495), (15, 1445196), (18, 1204330), (20, 1083897), (30, 722598), (36, 602165), (45, 481732), (60, 361299), (83, 261180), (90, 240866), (166, 130590), (180, 120433), (249, 87060), (332, 65295), (415, 52236), (498, 43530), (747, 29020), (830, 26118), (996, 21765), (1245, 17412), (1451, 14940), (1494, 14510), (1660, 13059), (2490, 8706), (2902, 7470), (2988, 7255), (3735, 5804), (4353, 4980)]