19726790

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:584

約数の個数: 32

約数和(自身を含む): 36667296

約数和(自身を除く): 16940506

約数列:

[1, 2, 5, 10, 61, 73, 122, 146, 305, 365, 443, 610, 730, 886, 2215, 4430, 4453, 8906, 22265, 27023, 32339, 44530, 54046, 64678, 135115, 161695, 270230, 323390, 1972679, 3945358, 9863395, 19726790]

約数ペア:

[(1, 19726790), (2, 9863395), (5, 3945358), (10, 1972679), (61, 323390), (73, 270230), (122, 161695), (146, 135115), (305, 64678), (365, 54046), (443, 44530), (610, 32339), (730, 27023), (886, 22265), (2215, 8906), (4430, 4453)]