21382065

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 39341952

約数和(自身を除く): 17959887

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 73, 115, 207, 219, 283, 345, 365, 657, 849, 1035, 1095, 1415, 1679, 2547, 3285, 4245, 5037, 6509, 8395, 12735, 15111, 19527, 20659, 25185, 32545, 58581, 61977, 75555, 97635, 103295, 185931, 292905, 309885, 475157, 929655, 1425471, 2375785, 4276413, 7127355, 21382065]

約数ペア:

[(1, 21382065), (3, 7127355), (5, 4276413), (9, 2375785), (15, 1425471), (23, 929655), (45, 475157), (69, 309885), (73, 292905), (115, 185931), (207, 103295), (219, 97635), (283, 75555), (345, 61977), (365, 58581), (657, 32545), (849, 25185), (1035, 20659), (1095, 19527), (1415, 15111), (1679, 12735), (2547, 8395), (3285, 6509), (4245, 5037)]