15723380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 18871180

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 389, 430, 470, 778, 860, 940, 1556, 1945, 2021, 3890, 4042, 7780, 8084, 10105, 16727, 18283, 20210, 33454, 36566, 40420, 66908, 73132, 83635, 91415, 167270, 182830, 334540, 365660, 786169, 1572338, 3144676, 3930845, 7861690, 15723380]

約数ペア:

[(1, 15723380), (2, 7861690), (4, 3930845), (5, 3144676), (10, 1572338), (20, 786169), (43, 365660), (47, 334540), (86, 182830), (94, 167270), (172, 91415), (188, 83635), (215, 73132), (235, 66908), (389, 40420), (430, 36566), (470, 33454), (778, 20210), (860, 18283), (940, 16727), (1556, 10105), (1945, 8084), (2021, 7780), (3890, 4042)]