90919780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{649427}}^1$

素因数の和:649443

約数の個数: 24

約数和(自身を含む): 218207808

約数和(自身を除く): 127288028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 649427, 1298854, 2597708, 3247135, 4545989, 6494270, 9091978, 12988540, 18183956, 22729945, 45459890, 90919780]

約数ペア:

[(1, 90919780), (2, 45459890), (4, 22729945), (5, 18183956), (7, 12988540), (10, 9091978), (14, 6494270), (20, 4545989), (28, 3247135), (35, 2597708), (70, 1298854), (140, 649427)]