21837915

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 41704416

約数和(自身を除く): 19866501

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 157, 165, 281, 471, 495, 785, 843, 1405, 1413, 1727, 2355, 2529, 3091, 4215, 5181, 7065, 8635, 9273, 12645, 15455, 15543, 25905, 27819, 44117, 46365, 77715, 132351, 139095, 220585, 397053, 485287, 661755, 1455861, 1985265, 2426435, 4367583, 7279305, 21837915]

約数ペア:

[(1, 21837915), (3, 7279305), (5, 4367583), (9, 2426435), (11, 1985265), (15, 1455861), (33, 661755), (45, 485287), (55, 397053), (99, 220585), (157, 139095), (165, 132351), (281, 77715), (471, 46365), (495, 44117), (785, 27819), (843, 25905), (1405, 15543), (1413, 15455), (1727, 12645), (2355, 9273), (2529, 8635), (3091, 7065), (4215, 5181)]