20369840

素因数分解:

$2^4\times 5^1\times {\mathrm{254623}}^1$

素因数の和:254636

約数の個数: 20

約数和(自身を含む): 47360064

約数和(自身を除く): 26990224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254623, 509246, 1018492, 1273115, 2036984, 2546230, 4073968, 5092460, 10184920, 20369840]

約数ペア:

[(1, 20369840), (2, 10184920), (4, 5092460), (5, 4073968), (8, 2546230), (10, 2036984), (16, 1273115), (20, 1018492), (40, 509246), (80, 254623)]