19553380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12697}}^1$

素因数の和:12724

約数の個数: 48

約数和(自身を含む): 51198336

約数和(自身を除く): 31644956

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, 1540, 12697, 25394, 50788, 63485, 88879, 126970, 139667, 177758, 253940, 279334, 355516, 444395, 558668, 698335, 888790, 977669, 1396670, 1777580, 1955338, 2793340, 3910676, 4888345, 9776690, 19553380]

約数ペア:

[(1, 19553380), (2, 9776690), (4, 4888345), (5, 3910676), (7, 2793340), (10, 1955338), (11, 1777580), (14, 1396670), (20, 977669), (22, 888790), (28, 698335), (35, 558668), (44, 444395), (55, 355516), (70, 279334), (77, 253940), (110, 177758), (140, 139667), (154, 126970), (220, 88879), (308, 63485), (385, 50788), (770, 25394), (1540, 12697)]