20404420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{60013}}^1$

素因数の和:60039

約数の個数: 24

約数和(自身を含む): 45370584

約数和(自身を除く): 24966164

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 60013, 120026, 240052, 300065, 600130, 1020221, 1200260, 2040442, 4080884, 5101105, 10202210, 20404420]

約数ペア:

[(1, 20404420), (2, 10202210), (4, 5101105), (5, 4080884), (10, 2040442), (17, 1200260), (20, 1020221), (34, 600130), (68, 300065), (85, 240052), (170, 120026), (340, 60013)]