20909655

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1153}}^1$

素因数の和:1208

約数の個数: 48

約数和(自身を含む): 40325376

約数和(自身を除く): 19415721

約数列:

[1, 3, 5, 9, 13, 15, 31, 39, 45, 65, 93, 117, 155, 195, 279, 403, 465, 585, 1153, 1209, 1395, 2015, 3459, 3627, 5765, 6045, 10377, 14989, 17295, 18135, 35743, 44967, 51885, 74945, 107229, 134901, 178715, 224835, 321687, 464659, 536145, 674505, 1393977, 1608435, 2323295, 4181931, 6969885, 20909655]

約数ペア:

[(1, 20909655), (3, 6969885), (5, 4181931), (9, 2323295), (13, 1608435), (15, 1393977), (31, 674505), (39, 536145), (45, 464659), (65, 321687), (93, 224835), (117, 178715), (155, 134901), (195, 107229), (279, 74945), (403, 51885), (465, 44967), (585, 35743), (1153, 18135), (1209, 17295), (1395, 14989), (2015, 10377), (3459, 6045), (3627, 5765)]