19488980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1301}}^1$

素因数の和:1424

約数の個数: 48

約数和(自身を含む): 47246976

約数和(自身を除く): 27757996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1301, 1498, 2140, 2602, 2996, 3745, 5204, 6505, 7490, 9107, 13010, 14980, 18214, 26020, 36428, 45535, 91070, 139207, 182140, 278414, 556828, 696035, 974449, 1392070, 1948898, 2784140, 3897796, 4872245, 9744490, 19488980]

約数ペア:

[(1, 19488980), (2, 9744490), (4, 4872245), (5, 3897796), (7, 2784140), (10, 1948898), (14, 1392070), (20, 974449), (28, 696035), (35, 556828), (70, 278414), (107, 182140), (140, 139207), (214, 91070), (428, 45535), (535, 36428), (749, 26020), (1070, 18214), (1301, 14980), (1498, 13010), (2140, 9107), (2602, 7490), (2996, 6505), (3745, 5204)]