21705372

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2441}}^1$

素因数の和:2483

約数の個数: 72

約数和(自身を含む): 62222160

約数和(自身を除く): 40516788

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2441, 2964, 4446, 4882, 7323, 8892, 9764, 14646, 21969, 29292, 31733, 43938, 46379, 63466, 87876, 92758, 95199, 126932, 139137, 185516, 190398, 278274, 285597, 380796, 417411, 556548, 571194, 602927, 834822, 1142388, 1205854, 1669644, 1808781, 2411708, 3617562, 5426343, 7235124, 10852686, 21705372]

約数ペア:

[(1, 21705372), (2, 10852686), (3, 7235124), (4, 5426343), (6, 3617562), (9, 2411708), (12, 1808781), (13, 1669644), (18, 1205854), (19, 1142388), (26, 834822), (36, 602927), (38, 571194), (39, 556548), (52, 417411), (57, 380796), (76, 285597), (78, 278274), (114, 190398), (117, 185516), (156, 139137), (171, 126932), (228, 95199), (234, 92758), (247, 87876), (342, 63466), (468, 46379), (494, 43938), (684, 31733), (741, 29292), (988, 21969), (1482, 14646), (2223, 9764), (2441, 8892), (2964, 7323), (4446, 4882)]