30987879

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 49158144

約数和(自身を除く): 18170265

約数列:

[1, 3, 13, 19, 31, 39, 57, 71, 93, 213, 247, 361, 403, 589, 741, 923, 1083, 1209, 1349, 1767, 2201, 2769, 4047, 4693, 6603, 7657, 11191, 14079, 17537, 22971, 25631, 28613, 33573, 41819, 52611, 76893, 85839, 125457, 145483, 333203, 436449, 543647, 794561, 999609, 1630941, 2383683, 10329293, 30987879]

約数ペア:

[(1, 30987879), (3, 10329293), (13, 2383683), (19, 1630941), (31, 999609), (39, 794561), (57, 543647), (71, 436449), (93, 333203), (213, 145483), (247, 125457), (361, 85839), (403, 76893), (589, 52611), (741, 41819), (923, 33573), (1083, 28613), (1209, 25631), (1349, 22971), (1767, 17537), (2201, 14079), (2769, 11191), (4047, 7657), (4693, 6603)]