20797154980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1068713}}^1$

素因数の和:1068868

約数の個数: 48

約数和(自身を含む): 50272306560

約数和(自身を除く): 29475151580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4865, 9730, 19460, 1068713, 2137426, 4274852, 5343565, 7480991, 10687130, 14961982, 21374260, 29923964, 37404955, 74809910, 148551107, 149619820, 297102214, 594204428, 742755535, 1039857749, 1485511070, 2079715498, 2971022140, 4159430996, 5199288745, 10398577490, 20797154980]

約数ペア:

[(1, 20797154980), (2, 10398577490), (4, 5199288745), (5, 4159430996), (7, 2971022140), (10, 2079715498), (14, 1485511070), (20, 1039857749), (28, 742755535), (35, 594204428), (70, 297102214), (139, 149619820), (140, 148551107), (278, 74809910), (556, 37404955), (695, 29923964), (973, 21374260), (1390, 14961982), (1946, 10687130), (2780, 7480991), (3892, 5343565), (4865, 4274852), (9730, 2137426), (19460, 1068713)]