18782865

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 34678800

約数和(自身を除く): 15895935

約数列:

[1, 3, 5, 9, 15, 29, 37, 45, 87, 111, 145, 185, 261, 333, 389, 435, 555, 1073, 1167, 1305, 1665, 1945, 3219, 3501, 5365, 5835, 9657, 11281, 14393, 16095, 17505, 33843, 43179, 48285, 56405, 71965, 101529, 129537, 169215, 215895, 417397, 507645, 647685, 1252191, 2086985, 3756573, 6260955, 18782865]

約数ペア:

[(1, 18782865), (3, 6260955), (5, 3756573), (9, 2086985), (15, 1252191), (29, 647685), (37, 507645), (45, 417397), (87, 215895), (111, 169215), (145, 129537), (185, 101529), (261, 71965), (333, 56405), (389, 48285), (435, 43179), (555, 33843), (1073, 17505), (1167, 16095), (1305, 14393), (1665, 11281), (1945, 9657), (3219, 5835), (3501, 5365)]