201854420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{142151}}^1$

素因数の和:142231

約数の個数: 24

約数和(自身を含む): 429867648

約数和(自身を除く): 228013228

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 142151, 284302, 568604, 710755, 1421510, 2843020, 10092721, 20185442, 40370884, 50463605, 100927210, 201854420]

約数ペア:

[(1, 201854420), (2, 100927210), (4, 50463605), (5, 40370884), (10, 20185442), (20, 10092721), (71, 2843020), (142, 1421510), (284, 710755), (355, 568604), (710, 284302), (1420, 142151)]