20550920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39521}}^1$

素因数の和:39545

約数の個数: 32

約数和(自身を含む): 49797720

約数和(自身を除く): 29246800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39521, 79042, 158084, 197605, 316168, 395210, 513773, 790420, 1027546, 1580840, 2055092, 2568865, 4110184, 5137730, 10275460, 20550920]

約数ペア:

[(1, 20550920), (2, 10275460), (4, 5137730), (5, 4110184), (8, 2568865), (10, 2055092), (13, 1580840), (20, 1027546), (26, 790420), (40, 513773), (52, 395210), (65, 316168), (104, 197605), (130, 158084), (260, 79042), (520, 39521)]