20804991

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:295

約数の個数: 32

約数和(自身を含む): 30792960

約数和(自身を除く): 9987969

約数列:

[1, 3, 17, 43, 51, 53, 129, 159, 179, 537, 731, 901, 2193, 2279, 2703, 3043, 6837, 7697, 9129, 9487, 23091, 28461, 38743, 116229, 130849, 161279, 392547, 407941, 483837, 1223823, 6934997, 20804991]

約数ペア:

[(1, 20804991), (3, 6934997), (17, 1223823), (43, 483837), (51, 407941), (53, 392547), (129, 161279), (159, 130849), (179, 116229), (537, 38743), (731, 28461), (901, 23091), (2193, 9487), (2279, 9129), (2703, 7697), (3043, 6837)]