18409815

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 16426665

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 53, 83, 93, 135, 155, 159, 249, 265, 279, 415, 465, 477, 747, 795, 837, 1245, 1395, 1431, 1643, 2241, 2385, 2573, 3735, 4185, 4399, 4929, 7155, 7719, 8215, 11205, 12865, 13197, 14787, 21995, 23157, 24645, 38595, 39591, 44361, 65985, 69471, 73935, 115785, 118773, 136369, 197955, 221805, 347355, 409107, 593865, 681845, 1227321, 2045535, 3681963, 6136605, 18409815]

約数ペア:

[(1, 18409815), (3, 6136605), (5, 3681963), (9, 2045535), (15, 1227321), (27, 681845), (31, 593865), (45, 409107), (53, 347355), (83, 221805), (93, 197955), (135, 136369), (155, 118773), (159, 115785), (249, 73935), (265, 69471), (279, 65985), (415, 44361), (465, 39591), (477, 38595), (747, 24645), (795, 23157), (837, 21995), (1245, 14787), (1395, 13197), (1431, 12865), (1643, 11205), (2241, 8215), (2385, 7719), (2573, 7155), (3735, 4929), (4185, 4399)]