213280705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:649

約数の個数: 32

約数和(自身を含む): 286338816

約数和(自身を除く): 73058111

約数列:

[1, 5, 11, 55, 61, 151, 305, 421, 671, 755, 1661, 2105, 3355, 4631, 8305, 9211, 23155, 25681, 46055, 63571, 101321, 128405, 282491, 317855, 506605, 699281, 1412455, 3496405, 3877831, 19389155, 42656141, 213280705]

約数ペア:

[(1, 213280705), (5, 42656141), (11, 19389155), (55, 3877831), (61, 3496405), (151, 1412455), (305, 699281), (421, 506605), (671, 317855), (755, 282491), (1661, 128405), (2105, 101321), (3355, 63571), (4631, 46055), (8305, 25681), (9211, 23155)]