20428600

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4441}}^1$

素因数の和:4480

約数の個数: 48

約数和(自身を含む): 49572720

約数和(自身を除く): 29144120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 460, 575, 920, 1150, 2300, 4441, 4600, 8882, 17764, 22205, 35528, 44410, 88820, 102143, 111025, 177640, 204286, 222050, 408572, 444100, 510715, 817144, 888200, 1021430, 2042860, 2553575, 4085720, 5107150, 10214300, 20428600]

約数ペア:

[(1, 20428600), (2, 10214300), (4, 5107150), (5, 4085720), (8, 2553575), (10, 2042860), (20, 1021430), (23, 888200), (25, 817144), (40, 510715), (46, 444100), (50, 408572), (92, 222050), (100, 204286), (115, 177640), (184, 111025), (200, 102143), (230, 88820), (460, 44410), (575, 35528), (920, 22205), (1150, 17764), (2300, 8882), (4441, 4600)]