21223685

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{631}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 30123648

約数和(自身を除く): 8899963

約数列:

[1, 5, 7, 31, 35, 155, 217, 631, 961, 1085, 3155, 4417, 4805, 6727, 19561, 22085, 33635, 97805, 136927, 606391, 684635, 3031955, 4244737, 21223685]

約数ペア:

[(1, 21223685), (5, 4244737), (7, 3031955), (31, 684635), (35, 606391), (155, 136927), (217, 97805), (631, 33635), (961, 22085), (1085, 19561), (3155, 6727), (4417, 4805)]