30879140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{90821}}^1$

素因数の和:90847

約数の個数: 24

約数和(自身を含む): 68661432

約数和(自身を除く): 37782292

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 90821, 181642, 363284, 454105, 908210, 1543957, 1816420, 3087914, 6175828, 7719785, 15439570, 30879140]

約数ペア:

[(1, 30879140), (2, 15439570), (4, 7719785), (5, 6175828), (10, 3087914), (17, 1816420), (20, 1543957), (34, 908210), (68, 454105), (85, 363284), (170, 181642), (340, 90821)]