18891556

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{257}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 37449216

約数和(自身を除く): 18557660

約数列:

[1, 2, 4, 17, 23, 34, 46, 47, 68, 92, 94, 188, 257, 391, 514, 782, 799, 1028, 1081, 1564, 1598, 2162, 3196, 4324, 4369, 5911, 8738, 11822, 12079, 17476, 18377, 23644, 24158, 36754, 48316, 73508, 100487, 200974, 205343, 277817, 401948, 410686, 555634, 821372, 1111268, 4722889, 9445778, 18891556]

約数ペア:

[(1, 18891556), (2, 9445778), (4, 4722889), (17, 1111268), (23, 821372), (34, 555634), (46, 410686), (47, 401948), (68, 277817), (92, 205343), (94, 200974), (188, 100487), (257, 73508), (391, 48316), (514, 36754), (782, 24158), (799, 23644), (1028, 18377), (1081, 17476), (1564, 12079), (1598, 11822), (2162, 8738), (3196, 5911), (4324, 4369)]