138778840

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{47527}}^1$

素因数の和:47611

約数の個数: 32

約数和(自身を含む): 316536480

約数和(自身を除く): 177757640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 47527, 95054, 190108, 237635, 380216, 475270, 950540, 1901080, 3469471, 6938942, 13877884, 17347355, 27755768, 34694710, 69389420, 138778840]

約数ペア:

[(1, 138778840), (2, 69389420), (4, 34694710), (5, 27755768), (8, 17347355), (10, 13877884), (20, 6938942), (40, 3469471), (73, 1901080), (146, 950540), (292, 475270), (365, 380216), (584, 237635), (730, 190108), (1460, 95054), (2920, 47527)]