19992819

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 35831808

約数和(自身を除く): 15838989

約数列:

[1, 3, 7, 11, 21, 23, 33, 53, 69, 71, 77, 159, 161, 213, 231, 253, 371, 483, 497, 583, 759, 781, 1113, 1219, 1491, 1633, 1749, 1771, 2343, 3657, 3763, 4081, 4899, 5313, 5467, 8533, 11289, 11431, 12243, 13409, 16401, 17963, 25599, 26341, 34293, 40227, 41393, 53889, 79023, 86549, 93863, 124179, 125741, 259647, 281589, 289751, 377223, 605843, 869253, 952039, 1817529, 2856117, 6664273, 19992819]

約数ペア:

[(1, 19992819), (3, 6664273), (7, 2856117), (11, 1817529), (21, 952039), (23, 869253), (33, 605843), (53, 377223), (69, 289751), (71, 281589), (77, 259647), (159, 125741), (161, 124179), (213, 93863), (231, 86549), (253, 79023), (371, 53889), (483, 41393), (497, 40227), (583, 34293), (759, 26341), (781, 25599), (1113, 17963), (1219, 16401), (1491, 13409), (1633, 12243), (1749, 11431), (1771, 11289), (2343, 8533), (3657, 5467), (3763, 5313), (4081, 4899)]