19907145

素因数分解:

$3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{2969}}^1$

素因数の和:3129

約数の個数: 24

約数和(自身を含む): 34749000

約数和(自身を除く): 14841855

約数列:

[1, 3, 5, 9, 15, 45, 149, 447, 745, 1341, 2235, 2969, 6705, 8907, 14845, 26721, 44535, 133605, 442381, 1327143, 2211905, 3981429, 6635715, 19907145]

約数ペア:

[(1, 19907145), (3, 6635715), (5, 3981429), (9, 2211905), (15, 1327143), (45, 442381), (149, 133605), (447, 44535), (745, 26721), (1341, 14845), (2235, 8907), (2969, 6705)]