205840420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{605413}}^1$

素因数の和:605439

約数の個数: 24

約数和(自身を含む): 457692984

約数和(自身を除く): 251852564

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 605413, 1210826, 2421652, 3027065, 6054130, 10292021, 12108260, 20584042, 41168084, 51460105, 102920210, 205840420]

約数ペア:

[(1, 205840420), (2, 102920210), (4, 51460105), (5, 41168084), (10, 20584042), (17, 12108260), (20, 10292021), (34, 6054130), (68, 3027065), (85, 2421652), (170, 1210826), (340, 605413)]