21188895

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1$

素因数の和:109

約数の個数: 96

約数和(自身を含む): 45061632

約数和(自身を除く): 23872737

約数列:

[1, 3, 5, 7, 13, 15, 19, 21, 35, 39, 43, 57, 65, 91, 95, 105, 129, 133, 195, 215, 247, 273, 285, 301, 361, 399, 455, 559, 645, 665, 741, 817, 903, 1083, 1235, 1365, 1505, 1677, 1729, 1805, 1995, 2451, 2527, 2795, 3705, 3913, 4085, 4515, 4693, 5187, 5415, 5719, 7581, 8385, 8645, 10621, 11739, 12255, 12635, 14079, 15523, 17157, 19565, 23465, 25935, 28595, 31863, 32851, 37905, 46569, 53105, 58695, 70395, 74347, 77615, 85785, 98553, 108661, 159315, 164255, 201799, 223041, 232845, 325983, 371735, 492765, 543305, 605397, 1008995, 1115205, 1412593, 1629915, 3026985, 4237779, 7062965, 21188895]

約数ペア:

[(1, 21188895), (3, 7062965), (5, 4237779), (7, 3026985), (13, 1629915), (15, 1412593), (19, 1115205), (21, 1008995), (35, 605397), (39, 543305), (43, 492765), (57, 371735), (65, 325983), (91, 232845), (95, 223041), (105, 201799), (129, 164255), (133, 159315), (195, 108661), (215, 98553), (247, 85785), (273, 77615), (285, 74347), (301, 70395), (361, 58695), (399, 53105), (455, 46569), (559, 37905), (645, 32851), (665, 31863), (741, 28595), (817, 25935), (903, 23465), (1083, 19565), (1235, 17157), (1365, 15523), (1505, 14079), (1677, 12635), (1729, 12255), (1805, 11739), (1995, 10621), (2451, 8645), (2527, 8385), (2795, 7581), (3705, 5719), (3913, 5415), (4085, 5187), (4515, 4693)]