21317508

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{293}}^1$

素因数の和:393

約数の個数: 72

約数和(自身を含む): 56504448

約数和(自身を除く): 35186940

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 47, 86, 94, 129, 141, 172, 188, 258, 282, 293, 387, 423, 516, 564, 586, 774, 846, 879, 1172, 1548, 1692, 1758, 2021, 2637, 3516, 4042, 5274, 6063, 8084, 10548, 12126, 12599, 13771, 18189, 24252, 25198, 27542, 36378, 37797, 41313, 50396, 55084, 72756, 75594, 82626, 113391, 123939, 151188, 165252, 226782, 247878, 453564, 495756, 592153, 1184306, 1776459, 2368612, 3552918, 5329377, 7105836, 10658754, 21317508]

約数ペア:

[(1, 21317508), (2, 10658754), (3, 7105836), (4, 5329377), (6, 3552918), (9, 2368612), (12, 1776459), (18, 1184306), (36, 592153), (43, 495756), (47, 453564), (86, 247878), (94, 226782), (129, 165252), (141, 151188), (172, 123939), (188, 113391), (258, 82626), (282, 75594), (293, 72756), (387, 55084), (423, 50396), (516, 41313), (564, 37797), (586, 36378), (774, 27542), (846, 25198), (879, 24252), (1172, 18189), (1548, 13771), (1692, 12599), (1758, 12126), (2021, 10548), (2637, 8084), (3516, 6063), (4042, 5274)]