21000399430

素因数分解:

$2^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{479}}^1\times {\mathrm{17467}}^1$

素因数の和:18204

約数の個数: 32

約数和(自身を含む): 38032727040

約数和(自身を除く): 17032327610

約数列:

[1, 2, 5, 10, 251, 479, 502, 958, 1255, 2395, 2510, 4790, 17467, 34934, 87335, 120229, 174670, 240458, 601145, 1202290, 4384217, 8366693, 8768434, 16733386, 21921085, 41833465, 43842170, 83666930, 2100039943, 4200079886, 10500199715, 21000399430]

約数ペア:

[(1, 21000399430), (2, 10500199715), (5, 4200079886), (10, 2100039943), (251, 83666930), (479, 43842170), (502, 41833465), (958, 21921085), (1255, 16733386), (2395, 8768434), (2510, 8366693), (4790, 4384217), (17467, 1202290), (34934, 601145), (87335, 240458), (120229, 174670)]