20903590

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{281}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 38861856

約数和(自身を除く): 17958266

約数列:

[1, 2, 5, 10, 43, 86, 173, 215, 281, 346, 430, 562, 865, 1405, 1730, 2810, 7439, 12083, 14878, 24166, 37195, 48613, 60415, 74390, 97226, 120830, 243065, 486130, 2090359, 4180718, 10451795, 20903590]

約数ペア:

[(1, 20903590), (2, 10451795), (5, 4180718), (10, 2090359), (43, 486130), (86, 243065), (173, 120830), (215, 97226), (281, 74390), (346, 60415), (430, 48613), (562, 37195), (865, 24166), (1405, 14878), (1730, 12083), (2810, 7439)]