28006888

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:147

約数の個数: 128

約数和(自身を含む): 71608320

約数和(自身を除く): 43601432

約数列:

[1, 2, 4, 7, 8, 13, 14, 17, 26, 28, 31, 34, 52, 56, 62, 68, 73, 91, 104, 119, 124, 136, 146, 182, 217, 221, 238, 248, 292, 364, 403, 434, 442, 476, 511, 527, 584, 728, 806, 868, 884, 949, 952, 1022, 1054, 1241, 1547, 1612, 1736, 1768, 1898, 2044, 2108, 2263, 2482, 2821, 3094, 3224, 3689, 3796, 4088, 4216, 4526, 4964, 5642, 6188, 6643, 6851, 7378, 7592, 8687, 9052, 9928, 11284, 12376, 13286, 13702, 14756, 15841, 16133, 17374, 18104, 22568, 26572, 27404, 29419, 29512, 31682, 32266, 34748, 38471, 47957, 53144, 54808, 58838, 63364, 64532, 69496, 76942, 95914, 112931, 117676, 126728, 129064, 153884, 191828, 205933, 225862, 235352, 269297, 307768, 383656, 411866, 451724, 500123, 538594, 823732, 903448, 1000246, 1077188, 1647464, 2000492, 2154376, 3500861, 4000984, 7001722, 14003444, 28006888]

約数ペア:

[(1, 28006888), (2, 14003444), (4, 7001722), (7, 4000984), (8, 3500861), (13, 2154376), (14, 2000492), (17, 1647464), (26, 1077188), (28, 1000246), (31, 903448), (34, 823732), (52, 538594), (56, 500123), (62, 451724), (68, 411866), (73, 383656), (91, 307768), (104, 269297), (119, 235352), (124, 225862), (136, 205933), (146, 191828), (182, 153884), (217, 129064), (221, 126728), (238, 117676), (248, 112931), (292, 95914), (364, 76942), (403, 69496), (434, 64532), (442, 63364), (476, 58838), (511, 54808), (527, 53144), (584, 47957), (728, 38471), (806, 34748), (868, 32266), (884, 31682), (949, 29512), (952, 29419), (1022, 27404), (1054, 26572), (1241, 22568), (1547, 18104), (1612, 17374), (1736, 16133), (1768, 15841), (1898, 14756), (2044, 13702), (2108, 13286), (2263, 12376), (2482, 11284), (2821, 9928), (3094, 9052), (3224, 8687), (3689, 7592), (3796, 7378), (4088, 6851), (4216, 6643), (4526, 6188), (4964, 5642)]