19652780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{613}}^1$

素因数の和:858

約数の個数: 48

約数和(自身を含む): 47449920

約数和(自身を除く): 27797140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 458, 613, 916, 1145, 1226, 1603, 2290, 2452, 3065, 3206, 4291, 4580, 6130, 6412, 8015, 8582, 12260, 16030, 17164, 21455, 32060, 42910, 85820, 140377, 280754, 561508, 701885, 982639, 1403770, 1965278, 2807540, 3930556, 4913195, 9826390, 19652780]

約数ペア:

[(1, 19652780), (2, 9826390), (4, 4913195), (5, 3930556), (7, 2807540), (10, 1965278), (14, 1403770), (20, 982639), (28, 701885), (35, 561508), (70, 280754), (140, 140377), (229, 85820), (458, 42910), (613, 32060), (916, 21455), (1145, 17164), (1226, 16030), (1603, 12260), (2290, 8582), (2452, 8015), (3065, 6412), (3206, 6130), (4291, 4580)]