21092840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:362

約数の個数: 64

約数和(自身を含む): 50232960

約数和(自身を除く): 29140120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 101, 115, 184, 202, 227, 230, 404, 454, 460, 505, 808, 908, 920, 1010, 1135, 1816, 2020, 2270, 2323, 4040, 4540, 4646, 5221, 9080, 9292, 10442, 11615, 18584, 20884, 22927, 23230, 26105, 41768, 45854, 46460, 52210, 91708, 92920, 104420, 114635, 183416, 208840, 229270, 458540, 527321, 917080, 1054642, 2109284, 2636605, 4218568, 5273210, 10546420, 21092840]

約数ペア:

[(1, 21092840), (2, 10546420), (4, 5273210), (5, 4218568), (8, 2636605), (10, 2109284), (20, 1054642), (23, 917080), (40, 527321), (46, 458540), (92, 229270), (101, 208840), (115, 183416), (184, 114635), (202, 104420), (227, 92920), (230, 91708), (404, 52210), (454, 46460), (460, 45854), (505, 41768), (808, 26105), (908, 23230), (920, 22927), (1010, 20884), (1135, 18584), (1816, 11615), (2020, 10442), (2270, 9292), (2323, 9080), (4040, 5221), (4540, 4646)]