857486540

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{542713}}^1$

素因数の和:542801

約数の個数: 24

約数和(自身を含む): 1823519040

約数和(自身を除く): 966032500

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 542713, 1085426, 2170852, 2713565, 5427130, 10854260, 42874327, 85748654, 171497308, 214371635, 428743270, 857486540]

約数ペア:

[(1, 857486540), (2, 428743270), (4, 214371635), (5, 171497308), (10, 85748654), (20, 42874327), (79, 10854260), (158, 5427130), (316, 2713565), (395, 2170852), (790, 1085426), (1580, 542713)]