21325040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2203}}^1$

素因数の和:2238

約数の個数: 60

約数和(自身を含む): 54522552

約数和(自身を除く): 33197512

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2203, 2420, 4406, 4840, 8812, 9680, 11015, 17624, 22030, 24233, 35248, 44060, 48466, 88120, 96932, 121165, 176240, 193864, 242330, 266563, 387728, 484660, 533126, 969320, 1066252, 1332815, 1938640, 2132504, 2665630, 4265008, 5331260, 10662520, 21325040]

約数ペア:

[(1, 21325040), (2, 10662520), (4, 5331260), (5, 4265008), (8, 2665630), (10, 2132504), (11, 1938640), (16, 1332815), (20, 1066252), (22, 969320), (40, 533126), (44, 484660), (55, 387728), (80, 266563), (88, 242330), (110, 193864), (121, 176240), (176, 121165), (220, 96932), (242, 88120), (440, 48466), (484, 44060), (605, 35248), (880, 24233), (968, 22030), (1210, 17624), (1936, 11015), (2203, 9680), (2420, 8812), (4406, 4840)]