19906371

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1399}}^1$

素因数の和:1456

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 12349629

約数列:

[1, 3, 9, 17, 27, 31, 51, 93, 153, 279, 459, 527, 837, 1399, 1581, 4197, 4743, 12591, 14229, 23783, 37773, 43369, 71349, 130107, 214047, 390321, 642141, 737273, 1170963, 2211819, 6635457, 19906371]

約数ペア:

[(1, 19906371), (3, 6635457), (9, 2211819), (17, 1170963), (27, 737273), (31, 642141), (51, 390321), (93, 214047), (153, 130107), (279, 71349), (459, 43369), (527, 37773), (837, 23783), (1399, 14229), (1581, 12591), (4197, 4743)]