21880818

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{467}}^1$

素因数の和:631

約数の個数: 48

約数和(自身を含む): 50375520

約数和(自身を除く): 28494702

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 137, 171, 274, 342, 411, 467, 822, 934, 1233, 1401, 2466, 2603, 2802, 4203, 5206, 7809, 8406, 8873, 15618, 17746, 23427, 26619, 46854, 53238, 63979, 79857, 127958, 159714, 191937, 383874, 575811, 1151622, 1215601, 2431202, 3646803, 7293606, 10940409, 21880818]

約数ペア:

[(1, 21880818), (2, 10940409), (3, 7293606), (6, 3646803), (9, 2431202), (18, 1215601), (19, 1151622), (38, 575811), (57, 383874), (114, 191937), (137, 159714), (171, 127958), (274, 79857), (342, 63979), (411, 53238), (467, 46854), (822, 26619), (934, 23427), (1233, 17746), (1401, 15618), (2466, 8873), (2603, 8406), (2802, 7809), (4203, 5206)]