17730620

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:494

約数の個数: 48

約数和(自身を含む): 38918880

約数和(自身を除く): 21188260

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 86, 106, 172, 212, 215, 265, 389, 430, 530, 778, 860, 1060, 1556, 1945, 2279, 3890, 4558, 7780, 9116, 11395, 16727, 20617, 22790, 33454, 41234, 45580, 66908, 82468, 83635, 103085, 167270, 206170, 334540, 412340, 886531, 1773062, 3546124, 4432655, 8865310, 17730620]

約数ペア:

[(1, 17730620), (2, 8865310), (4, 4432655), (5, 3546124), (10, 1773062), (20, 886531), (43, 412340), (53, 334540), (86, 206170), (106, 167270), (172, 103085), (212, 83635), (215, 82468), (265, 66908), (389, 45580), (430, 41234), (530, 33454), (778, 22790), (860, 20617), (1060, 16727), (1556, 11395), (1945, 9116), (2279, 7780), (3890, 4558)]