18712940

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{1789}}^1$

素因数の和:2321

約数の個数: 24

約数和(自身を含む): 39394320

約数和(自身を除く): 20681380

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 1789, 2092, 2615, 3578, 5230, 7156, 8945, 10460, 17890, 35780, 935647, 1871294, 3742588, 4678235, 9356470, 18712940]

約数ペア:

[(1, 18712940), (2, 9356470), (4, 4678235), (5, 3742588), (10, 1871294), (20, 935647), (523, 35780), (1046, 17890), (1789, 10460), (2092, 8945), (2615, 7156), (3578, 5230)]