28476680

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 66977280

約数和(自身を除く): 38500600

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 71, 74, 142, 148, 185, 271, 284, 296, 355, 370, 542, 568, 710, 740, 1084, 1355, 1420, 1480, 2168, 2627, 2710, 2840, 5254, 5420, 10027, 10508, 10840, 13135, 19241, 20054, 21016, 26270, 38482, 40108, 50135, 52540, 76964, 80216, 96205, 100270, 105080, 153928, 192410, 200540, 384820, 401080, 711917, 769640, 1423834, 2847668, 3559585, 5695336, 7119170, 14238340, 28476680]

約数ペア:

[(1, 28476680), (2, 14238340), (4, 7119170), (5, 5695336), (8, 3559585), (10, 2847668), (20, 1423834), (37, 769640), (40, 711917), (71, 401080), (74, 384820), (142, 200540), (148, 192410), (185, 153928), (271, 105080), (284, 100270), (296, 96205), (355, 80216), (370, 76964), (542, 52540), (568, 50135), (710, 40108), (740, 38482), (1084, 26270), (1355, 21016), (1420, 20054), (1480, 19241), (2168, 13135), (2627, 10840), (2710, 10508), (2840, 10027), (5254, 5420)]