20720688

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:474

約数の個数: 80

約数和(自身を含む): 57674880

約数和(自身を除く): 36954192

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 67, 68, 102, 134, 136, 201, 204, 268, 272, 379, 402, 408, 536, 758, 804, 816, 1072, 1137, 1139, 1516, 1608, 2274, 2278, 3032, 3216, 3417, 4548, 4556, 6064, 6443, 6834, 9096, 9112, 12886, 13668, 18192, 18224, 19329, 25393, 25772, 27336, 38658, 50786, 51544, 54672, 76179, 77316, 101572, 103088, 152358, 154632, 203144, 304716, 309264, 406288, 431681, 609432, 863362, 1218864, 1295043, 1726724, 2590086, 3453448, 5180172, 6906896, 10360344, 20720688]

約数ペア:

[(1, 20720688), (2, 10360344), (3, 6906896), (4, 5180172), (6, 3453448), (8, 2590086), (12, 1726724), (16, 1295043), (17, 1218864), (24, 863362), (34, 609432), (48, 431681), (51, 406288), (67, 309264), (68, 304716), (102, 203144), (134, 154632), (136, 152358), (201, 103088), (204, 101572), (268, 77316), (272, 76179), (379, 54672), (402, 51544), (408, 50786), (536, 38658), (758, 27336), (804, 25772), (816, 25393), (1072, 19329), (1137, 18224), (1139, 18192), (1516, 13668), (1608, 12886), (2274, 9112), (2278, 9096), (3032, 6834), (3216, 6443), (3417, 6064), (4548, 4556)]