28690815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{1907}}^1$

素因数の和:1991

約数の個数: 32

約数和(自身を含む): 49455360

約数和(自身を除く): 20764545

約数列:

[1, 3, 5, 15, 17, 51, 59, 85, 177, 255, 295, 885, 1003, 1907, 3009, 5015, 5721, 9535, 15045, 28605, 32419, 97257, 112513, 162095, 337539, 486285, 562565, 1687695, 1912721, 5738163, 9563605, 28690815]

約数ペア:

[(1, 28690815), (3, 9563605), (5, 5738163), (15, 1912721), (17, 1687695), (51, 562565), (59, 486285), (85, 337539), (177, 162095), (255, 112513), (295, 97257), (885, 32419), (1003, 28605), (1907, 15045), (3009, 9535), (5015, 5721)]