19852980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47269}}^1$

素因数の和:47288

約数の個数: 48

約数和(自身を含む): 63530880

約数和(自身を除く): 43677900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47269, 94538, 141807, 189076, 236345, 283614, 330883, 472690, 567228, 661766, 709035, 945380, 992649, 1323532, 1418070, 1654415, 1985298, 2836140, 3308830, 3970596, 4963245, 6617660, 9926490, 19852980]

約数ペア:

[(1, 19852980), (2, 9926490), (3, 6617660), (4, 4963245), (5, 3970596), (6, 3308830), (7, 2836140), (10, 1985298), (12, 1654415), (14, 1418070), (15, 1323532), (20, 992649), (21, 945380), (28, 709035), (30, 661766), (35, 567228), (42, 472690), (60, 330883), (70, 283614), (84, 236345), (105, 189076), (140, 141807), (210, 94538), (420, 47269)]