18233865

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:534

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 16360695

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 71, 117, 195, 213, 355, 439, 585, 639, 923, 1065, 1317, 2195, 2769, 3195, 3951, 4615, 5707, 6585, 8307, 13845, 17121, 19755, 28535, 31169, 41535, 51363, 85605, 93507, 155845, 256815, 280521, 405197, 467535, 1215591, 1402605, 2025985, 3646773, 6077955, 18233865]

約数ペア:

[(1, 18233865), (3, 6077955), (5, 3646773), (9, 2025985), (13, 1402605), (15, 1215591), (39, 467535), (45, 405197), (65, 280521), (71, 256815), (117, 155845), (195, 93507), (213, 85605), (355, 51363), (439, 41535), (585, 31169), (639, 28535), (923, 19755), (1065, 17121), (1317, 13845), (2195, 8307), (2769, 6585), (3195, 5707), (3951, 4615)]