21509830

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{2281}}^1$

素因数の和:2352

約数の個数: 32

約数和(自身を含む): 41404608

約数和(自身を除く): 19894778

約数列:

[1, 2, 5, 10, 23, 41, 46, 82, 115, 205, 230, 410, 943, 1886, 2281, 4562, 4715, 9430, 11405, 22810, 52463, 93521, 104926, 187042, 262315, 467605, 524630, 935210, 2150983, 4301966, 10754915, 21509830]

約数ペア:

[(1, 21509830), (2, 10754915), (5, 4301966), (10, 2150983), (23, 935210), (41, 524630), (46, 467605), (82, 262315), (115, 187042), (205, 104926), (230, 93521), (410, 52463), (943, 22810), (1886, 11405), (2281, 9430), (4562, 4715)]