28458920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:163

約数の個数: 128

約数和(自身を含む): 78140160

約数和(自身を除く): 49681240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 41, 56, 67, 70, 74, 82, 134, 140, 148, 164, 185, 205, 259, 268, 280, 287, 296, 328, 335, 370, 410, 469, 518, 536, 574, 670, 740, 820, 938, 1036, 1148, 1295, 1340, 1435, 1480, 1517, 1640, 1876, 2072, 2296, 2345, 2479, 2590, 2680, 2747, 2870, 3034, 3752, 4690, 4958, 5180, 5494, 5740, 6068, 7585, 9380, 9916, 10360, 10619, 10988, 11480, 12136, 12395, 13735, 15170, 17353, 18760, 19229, 19832, 21238, 21976, 24790, 27470, 30340, 34706, 38458, 42476, 49580, 53095, 54940, 60680, 69412, 76916, 84952, 86765, 96145, 99160, 101639, 106190, 109880, 138824, 153832, 173530, 192290, 203278, 212380, 347060, 384580, 406556, 424760, 508195, 694120, 711473, 769160, 813112, 1016390, 1422946, 2032780, 2845892, 3557365, 4065560, 5691784, 7114730, 14229460, 28458920]

約数ペア:

[(1, 28458920), (2, 14229460), (4, 7114730), (5, 5691784), (7, 4065560), (8, 3557365), (10, 2845892), (14, 2032780), (20, 1422946), (28, 1016390), (35, 813112), (37, 769160), (40, 711473), (41, 694120), (56, 508195), (67, 424760), (70, 406556), (74, 384580), (82, 347060), (134, 212380), (140, 203278), (148, 192290), (164, 173530), (185, 153832), (205, 138824), (259, 109880), (268, 106190), (280, 101639), (287, 99160), (296, 96145), (328, 86765), (335, 84952), (370, 76916), (410, 69412), (469, 60680), (518, 54940), (536, 53095), (574, 49580), (670, 42476), (740, 38458), (820, 34706), (938, 30340), (1036, 27470), (1148, 24790), (1295, 21976), (1340, 21238), (1435, 19832), (1480, 19229), (1517, 18760), (1640, 17353), (1876, 15170), (2072, 13735), (2296, 12395), (2345, 12136), (2479, 11480), (2590, 10988), (2680, 10619), (2747, 10360), (2870, 9916), (3034, 9380), (3752, 7585), (4690, 6068), (4958, 5740), (5180, 5494)]