87654890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{1013}}^1$

素因数の和:1546

約数の個数: 32

約数和(自身を含む): 167553360

約数和(自身を除く): 79898470

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 509, 1013, 1018, 2026, 2545, 5065, 5090, 8653, 10130, 17221, 17306, 34442, 43265, 86105, 86530, 172210, 515617, 1031234, 2578085, 5156170, 8765489, 17530978, 43827445, 87654890]

約数ペア:

[(1, 87654890), (2, 43827445), (5, 17530978), (10, 8765489), (17, 5156170), (34, 2578085), (85, 1031234), (170, 515617), (509, 172210), (1013, 86530), (1018, 86105), (2026, 43265), (2545, 34442), (5065, 17306), (5090, 17221), (8653, 10130)]