20830870

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^2$

素因数の和:165

約数の個数: 48

約数和(自身を含む): 40951008

約数和(自身を除く): 20120138

約数列:

[1, 2, 5, 10, 23, 41, 46, 47, 82, 94, 115, 205, 230, 235, 410, 470, 943, 1081, 1886, 1927, 2162, 2209, 3854, 4418, 4715, 5405, 9430, 9635, 10810, 11045, 19270, 22090, 44321, 50807, 88642, 90569, 101614, 181138, 221605, 254035, 443210, 452845, 508070, 905690, 2083087, 4166174, 10415435, 20830870]

約数ペア:

[(1, 20830870), (2, 10415435), (5, 4166174), (10, 2083087), (23, 905690), (41, 508070), (46, 452845), (47, 443210), (82, 254035), (94, 221605), (115, 181138), (205, 101614), (230, 90569), (235, 88642), (410, 50807), (470, 44321), (943, 22090), (1081, 19270), (1886, 11045), (1927, 10810), (2162, 9635), (2209, 9430), (3854, 5405), (4418, 4715)]