19804095

素因数分解:

$3^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{457}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 35910864

約数和(自身を除く): 16106769

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 107, 135, 321, 405, 457, 535, 963, 1371, 1605, 2285, 2889, 4113, 4815, 6855, 8667, 12339, 14445, 20565, 37017, 43335, 48899, 61695, 146697, 185085, 244495, 440091, 733485, 1320273, 2200455, 3960819, 6601365, 19804095]

約数ペア:

[(1, 19804095), (3, 6601365), (5, 3960819), (9, 2200455), (15, 1320273), (27, 733485), (45, 440091), (81, 244495), (107, 185085), (135, 146697), (321, 61695), (405, 48899), (457, 43335), (535, 37017), (963, 20565), (1371, 14445), (1605, 12339), (2285, 8667), (2889, 6855), (4113, 4815)]