1997380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1297}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 5233536

約数和(自身を除く): 3236156

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1297, 1540, 2594, 5188, 6485, 9079, 12970, 14267, 18158, 25940, 28534, 36316, 45395, 57068, 71335, 90790, 99869, 142670, 181580, 199738, 285340, 399476, 499345, 998690, 1997380]

約数ペア:

[(1, 1997380), (2, 998690), (4, 499345), (5, 399476), (7, 285340), (10, 199738), (11, 181580), (14, 142670), (20, 99869), (22, 90790), (28, 71335), (35, 57068), (44, 45395), (55, 36316), (70, 28534), (77, 25940), (110, 18158), (140, 14267), (154, 12970), (220, 9079), (308, 6485), (385, 5188), (770, 2594), (1297, 1540)]