28748080

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 80

約数和(自身を含む): 70022304

約数和(自身を除く): 41274224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 61, 80, 86, 122, 137, 172, 215, 244, 274, 305, 344, 430, 488, 548, 610, 685, 688, 860, 976, 1096, 1220, 1370, 1720, 2192, 2440, 2623, 2740, 3440, 4880, 5246, 5480, 5891, 8357, 10492, 10960, 11782, 13115, 16714, 20984, 23564, 26230, 29455, 33428, 41785, 41968, 47128, 52460, 58910, 66856, 83570, 94256, 104920, 117820, 133712, 167140, 209840, 235640, 334280, 359351, 471280, 668560, 718702, 1437404, 1796755, 2874808, 3593510, 5749616, 7187020, 14374040, 28748080]

約数ペア:

[(1, 28748080), (2, 14374040), (4, 7187020), (5, 5749616), (8, 3593510), (10, 2874808), (16, 1796755), (20, 1437404), (40, 718702), (43, 668560), (61, 471280), (80, 359351), (86, 334280), (122, 235640), (137, 209840), (172, 167140), (215, 133712), (244, 117820), (274, 104920), (305, 94256), (344, 83570), (430, 66856), (488, 58910), (548, 52460), (610, 47128), (685, 41968), (688, 41785), (860, 33428), (976, 29455), (1096, 26230), (1220, 23564), (1370, 20984), (1720, 16714), (2192, 13115), (2440, 11782), (2623, 10960), (2740, 10492), (3440, 8357), (4880, 5891), (5246, 5480)]