258572020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{263849}}^1$

素因数の和:263872

約数の個数: 36

約数和(自身を含む): 631656900

約数和(自身を除く): 373084880

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 263849, 527698, 1055396, 1319245, 1846943, 2638490, 3693886, 5276980, 7387772, 9234715, 12928601, 18469430, 25857202, 36938860, 51714404, 64643005, 129286010, 258572020]

約数ペア:

[(1, 258572020), (2, 129286010), (4, 64643005), (5, 51714404), (7, 36938860), (10, 25857202), (14, 18469430), (20, 12928601), (28, 9234715), (35, 7387772), (49, 5276980), (70, 3693886), (98, 2638490), (140, 1846943), (196, 1319245), (245, 1055396), (490, 527698), (980, 263849)]