19647560

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11423}}^1$

素因数の和:11477

約数の個数: 32

約数和(自身を含む): 45239040

約数和(自身を除く): 25591480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11423, 22846, 45692, 57115, 91384, 114230, 228460, 456920, 491189, 982378, 1964756, 2455945, 3929512, 4911890, 9823780, 19647560]

約数ペア:

[(1, 19647560), (2, 9823780), (4, 4911890), (5, 3929512), (8, 2455945), (10, 1964756), (20, 982378), (40, 491189), (43, 456920), (86, 228460), (172, 114230), (215, 91384), (344, 57115), (430, 45692), (860, 22846), (1720, 11423)]