21315490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{1061}}^1$

素因数の和:1123

約数の個数: 48

約数和(自身を含む): 45763704

約数和(自身を除く): 24448214

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 49, 70, 82, 98, 205, 245, 287, 410, 490, 574, 1061, 1435, 2009, 2122, 2870, 4018, 5305, 7427, 10045, 10610, 14854, 20090, 37135, 43501, 51989, 74270, 87002, 103978, 217505, 259945, 304507, 435010, 519890, 609014, 1522535, 2131549, 3045070, 4263098, 10657745, 21315490]

約数ペア:

[(1, 21315490), (2, 10657745), (5, 4263098), (7, 3045070), (10, 2131549), (14, 1522535), (35, 609014), (41, 519890), (49, 435010), (70, 304507), (82, 259945), (98, 217505), (205, 103978), (245, 87002), (287, 74270), (410, 51989), (490, 43501), (574, 37135), (1061, 20090), (1435, 14854), (2009, 10610), (2122, 10045), (2870, 7427), (4018, 5305)]