21998920

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1193}}^1$

素因数の和:1665

約数の個数: 32

約数和(自身を含む): 49646520

約数和(自身を除く): 27647600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1193, 1844, 2305, 2386, 3688, 4610, 4772, 5965, 9220, 9544, 11930, 18440, 23860, 47720, 549973, 1099946, 2199892, 2749865, 4399784, 5499730, 10999460, 21998920]

約数ペア:

[(1, 21998920), (2, 10999460), (4, 5499730), (5, 4399784), (8, 2749865), (10, 2199892), (20, 1099946), (40, 549973), (461, 47720), (922, 23860), (1193, 18440), (1844, 11930), (2305, 9544), (2386, 9220), (3688, 5965), (4610, 4772)]