217408210

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{55889}}^1$

素因数の和:56285

約数の個数: 16

約数和(自身を含む): 392347800

約数和(自身を除く): 174939590

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 55889, 111778, 279445, 558890, 21740821, 43481642, 108704105, 217408210]

約数ペア:

[(1, 217408210), (2, 108704105), (5, 43481642), (10, 21740821), (389, 558890), (778, 279445), (1945, 111778), (3890, 55889)]