645553180

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{285643}}^1$

素因数の和:285765

約数の個数: 24

約数和(自身を含む): 1367663472

約数和(自身を除く): 722110292

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 285643, 571286, 1142572, 1428215, 2856430, 5712860, 32277659, 64555318, 129110636, 161388295, 322776590, 645553180]

約数ペア:

[(1, 645553180), (2, 322776590), (4, 161388295), (5, 129110636), (10, 64555318), (20, 32277659), (113, 5712860), (226, 2856430), (452, 1428215), (565, 1142572), (1130, 571286), (2260, 285643)]