20018660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24413}}^1$

素因数の和:24463

約数の個数: 24

約数和(自身を含む): 43066296

約数和(自身を除く): 23047636

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 24413, 48826, 97652, 122065, 244130, 488260, 1000933, 2001866, 4003732, 5004665, 10009330, 20018660]

約数ペア:

[(1, 20018660), (2, 10009330), (4, 5004665), (5, 4003732), (10, 2001866), (20, 1000933), (41, 488260), (82, 244130), (164, 122065), (205, 97652), (410, 48826), (820, 24413)]