28409120

素因数分解:

$2^5\times 5^1\times {\mathrm{277}}^1\times {\mathrm{641}}^1$

素因数の和:933

約数の個数: 48

約数和(自身を含む): 67463928

約数和(自身を除く): 39054808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 277, 554, 641, 1108, 1282, 1385, 2216, 2564, 2770, 3205, 4432, 5128, 5540, 6410, 8864, 10256, 11080, 12820, 20512, 22160, 25640, 44320, 51280, 102560, 177557, 355114, 710228, 887785, 1420456, 1775570, 2840912, 3551140, 5681824, 7102280, 14204560, 28409120]

約数ペア:

[(1, 28409120), (2, 14204560), (4, 7102280), (5, 5681824), (8, 3551140), (10, 2840912), (16, 1775570), (20, 1420456), (32, 887785), (40, 710228), (80, 355114), (160, 177557), (277, 102560), (554, 51280), (641, 44320), (1108, 25640), (1282, 22160), (1385, 20512), (2216, 12820), (2564, 11080), (2770, 10256), (3205, 8864), (4432, 6410), (5128, 5540)]