217967355

素因数分解:

$3^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:700

約数の個数: 64

約数和(自身を含む): 405565440

約数和(自身を除く): 187598085

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 135, 155, 243, 279, 405, 465, 643, 729, 837, 1215, 1395, 1929, 2187, 2511, 3215, 3645, 4185, 5787, 7533, 9645, 10935, 12555, 17361, 19933, 22599, 28935, 37665, 52083, 59799, 67797, 86805, 99665, 112995, 156249, 179397, 260415, 298995, 338985, 468747, 538191, 781245, 896985, 1406241, 1614573, 2343735, 2690955, 4843719, 7031205, 8072865, 14531157, 24218595, 43593471, 72655785, 217967355]

約数ペア:

[(1, 217967355), (3, 72655785), (5, 43593471), (9, 24218595), (15, 14531157), (27, 8072865), (31, 7031205), (45, 4843719), (81, 2690955), (93, 2343735), (135, 1614573), (155, 1406241), (243, 896985), (279, 781245), (405, 538191), (465, 468747), (643, 338985), (729, 298995), (837, 260415), (1215, 179397), (1395, 156249), (1929, 112995), (2187, 99665), (2511, 86805), (3215, 67797), (3645, 59799), (4185, 52083), (5787, 37665), (7533, 28935), (9645, 22599), (10935, 19933), (12555, 17361)]