21366905

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{419}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 9598855

約数列:

[1, 5, 7, 31, 35, 47, 155, 217, 235, 329, 419, 1085, 1457, 1645, 2095, 2933, 7285, 10199, 12989, 14665, 19693, 50995, 64945, 90923, 98465, 137851, 454615, 610483, 689255, 3052415, 4273381, 21366905]

約数ペア:

[(1, 21366905), (5, 4273381), (7, 3052415), (31, 689255), (35, 610483), (47, 454615), (155, 137851), (217, 98465), (235, 90923), (329, 64945), (419, 50995), (1085, 19693), (1457, 14665), (1645, 12989), (2095, 10199), (2933, 7285)]