992240

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:249

約数の個数: 40

約数和(自身を含む): 2351040

約数和(自身を除く): 1358800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 157, 158, 314, 316, 395, 628, 632, 785, 790, 1256, 1264, 1570, 1580, 2512, 3140, 3160, 6280, 6320, 12403, 12560, 24806, 49612, 62015, 99224, 124030, 198448, 248060, 496120, 992240]

約数ペア:

[(1, 992240), (2, 496120), (4, 248060), (5, 198448), (8, 124030), (10, 99224), (16, 62015), (20, 49612), (40, 24806), (79, 12560), (80, 12403), (157, 6320), (158, 6280), (314, 3160), (316, 3140), (395, 2512), (628, 1580), (632, 1570), (785, 1264), (790, 1256)]