20800280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{983}}^1$

素因数の和:1040

約数の個数: 48

約数和(自身を含む): 48973680

約数和(自身を除く): 28173400

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 529, 920, 983, 1058, 1966, 2116, 2645, 3932, 4232, 4915, 5290, 7864, 9830, 10580, 19660, 21160, 22609, 39320, 45218, 90436, 113045, 180872, 226090, 452180, 520007, 904360, 1040014, 2080028, 2600035, 4160056, 5200070, 10400140, 20800280]

約数ペア:

[(1, 20800280), (2, 10400140), (4, 5200070), (5, 4160056), (8, 2600035), (10, 2080028), (20, 1040014), (23, 904360), (40, 520007), (46, 452180), (92, 226090), (115, 180872), (184, 113045), (230, 90436), (460, 45218), (529, 39320), (920, 22609), (983, 21160), (1058, 19660), (1966, 10580), (2116, 9830), (2645, 7864), (3932, 5290), (4232, 4915)]