21254313

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1\times {\mathrm{509}}^1$

素因数の和:992

約数の個数: 16

約数和(自身を含む): 29376000

約数和(自身を除く): 8121687

約数列:

[1, 3, 31, 93, 449, 509, 1347, 1527, 13919, 15779, 41757, 47337, 228541, 685623, 7084771, 21254313]

約数ペア:

[(1, 21254313), (3, 7084771), (31, 685623), (93, 228541), (449, 47337), (509, 41757), (1347, 15779), (1527, 13919)]