18957735

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 34632000

約数和(自身を除く): 15674265

約数列:

[1, 3, 5, 9, 15, 29, 45, 73, 87, 145, 199, 219, 261, 365, 435, 597, 657, 995, 1095, 1305, 1791, 2117, 2985, 3285, 5771, 6351, 8955, 10585, 14527, 17313, 19053, 28855, 31755, 43581, 51939, 72635, 86565, 95265, 130743, 217905, 259695, 421283, 653715, 1263849, 2106415, 3791547, 6319245, 18957735]

約数ペア:

[(1, 18957735), (3, 6319245), (5, 3791547), (9, 2106415), (15, 1263849), (29, 653715), (45, 421283), (73, 259695), (87, 217905), (145, 130743), (199, 95265), (219, 86565), (261, 72635), (365, 51939), (435, 43581), (597, 31755), (657, 28855), (995, 19053), (1095, 17313), (1305, 14527), (1791, 10585), (2117, 8955), (2985, 6351), (3285, 5771)]