21093380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13697}}^1$

素因数の和:13724

約数の個数: 48

約数和(自身を含む): 55230336

約数和(自身を除く): 34136956

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, 13697, 27394, 54788, 68485, 95879, 136970, 150667, 191758, 273940, 301334, 383516, 479395, 602668, 753335, 958790, 1054669, 1506670, 1917580, 2109338, 3013340, 4218676, 5273345, 10546690, 21093380]

約数ペア:

[(1, 21093380), (2, 10546690), (4, 5273345), (5, 4218676), (7, 3013340), (10, 2109338), (11, 1917580), (14, 1506670), (20, 1054669), (22, 958790), (28, 753335), (35, 602668), (44, 479395), (55, 383516), (70, 301334), (77, 273940), (110, 191758), (140, 150667), (154, 136970), (220, 95879), (308, 68485), (385, 54788), (770, 27394), (1540, 13697)]