21005829

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 35380800

約数和(自身を除く): 14374971

約数列:

[1, 3, 9, 13, 17, 39, 51, 59, 117, 153, 177, 179, 221, 531, 537, 663, 767, 1003, 1611, 1989, 2301, 2327, 3009, 3043, 6903, 6981, 9027, 9129, 10561, 13039, 20943, 27387, 31683, 39117, 39559, 95049, 117351, 118677, 137293, 179537, 356031, 411879, 538611, 1235637, 1615833, 2333981, 7001943, 21005829]

約数ペア:

[(1, 21005829), (3, 7001943), (9, 2333981), (13, 1615833), (17, 1235637), (39, 538611), (51, 411879), (59, 356031), (117, 179537), (153, 137293), (177, 118677), (179, 117351), (221, 95049), (531, 39559), (537, 39117), (663, 31683), (767, 27387), (1003, 20943), (1611, 13039), (1989, 10561), (2301, 9129), (2327, 9027), (3009, 6981), (3043, 6903)]