28048640

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1289}}^1$

素因数の和:1327

約数の個数: 72

約数和(自身を含む): 71192520

約数和(自身を除く): 43143880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1289, 1360, 2176, 2578, 2720, 4352, 5156, 5440, 6445, 10312, 10880, 12890, 20624, 21760, 21913, 25780, 41248, 43826, 51560, 82496, 87652, 103120, 109565, 164992, 175304, 206240, 219130, 329984, 350608, 412480, 438260, 701216, 824960, 876520, 1402432, 1649920, 1753040, 2804864, 3506080, 5609728, 7012160, 14024320, 28048640]

約数ペア:

[(1, 28048640), (2, 14024320), (4, 7012160), (5, 5609728), (8, 3506080), (10, 2804864), (16, 1753040), (17, 1649920), (20, 1402432), (32, 876520), (34, 824960), (40, 701216), (64, 438260), (68, 412480), (80, 350608), (85, 329984), (128, 219130), (136, 206240), (160, 175304), (170, 164992), (256, 109565), (272, 103120), (320, 87652), (340, 82496), (544, 51560), (640, 43826), (680, 41248), (1088, 25780), (1280, 21913), (1289, 21760), (1360, 20624), (2176, 12890), (2578, 10880), (2720, 10312), (4352, 6445), (5156, 5440)]