28709120

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2039}}^1$

素因数の和:2071

約数の個数: 72

約数和(自身を含む): 75055680

約数和(自身を除く): 46346560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1760, 2039, 2816, 3520, 4078, 7040, 8156, 10195, 14080, 16312, 20390, 22429, 32624, 40780, 44858, 65248, 81560, 89716, 112145, 130496, 163120, 179432, 224290, 260992, 326240, 358864, 448580, 521984, 652480, 717728, 897160, 1304960, 1435456, 1794320, 2609920, 2870912, 3588640, 5741824, 7177280, 14354560, 28709120]

約数ペア:

[(1, 28709120), (2, 14354560), (4, 7177280), (5, 5741824), (8, 3588640), (10, 2870912), (11, 2609920), (16, 1794320), (20, 1435456), (22, 1304960), (32, 897160), (40, 717728), (44, 652480), (55, 521984), (64, 448580), (80, 358864), (88, 326240), (110, 260992), (128, 224290), (160, 179432), (176, 163120), (220, 130496), (256, 112145), (320, 89716), (352, 81560), (440, 65248), (640, 44858), (704, 40780), (880, 32624), (1280, 22429), (1408, 20390), (1760, 16312), (2039, 14080), (2816, 10195), (3520, 8156), (4078, 7040)]