20647935

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 96

約数和(自身を含む): 45826560

約数和(自身を除く): 25178625

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 59, 63, 77, 99, 101, 105, 165, 177, 231, 295, 303, 315, 385, 413, 495, 505, 531, 649, 693, 707, 885, 909, 1111, 1155, 1239, 1515, 1947, 2065, 2121, 2655, 3245, 3333, 3465, 3535, 3717, 4543, 4545, 5555, 5841, 5959, 6195, 6363, 7777, 9735, 9999, 10605, 13629, 16665, 17877, 18585, 22715, 23331, 29205, 29795, 31815, 38885, 40887, 41713, 49995, 53631, 65549, 68145, 69993, 89385, 116655, 125139, 196647, 204435, 208565, 268155, 327745, 349965, 375417, 458843, 589941, 625695, 983235, 1376529, 1877085, 2294215, 2949705, 4129587, 6882645, 20647935]

約数ペア:

[(1, 20647935), (3, 6882645), (5, 4129587), (7, 2949705), (9, 2294215), (11, 1877085), (15, 1376529), (21, 983235), (33, 625695), (35, 589941), (45, 458843), (55, 375417), (59, 349965), (63, 327745), (77, 268155), (99, 208565), (101, 204435), (105, 196647), (165, 125139), (177, 116655), (231, 89385), (295, 69993), (303, 68145), (315, 65549), (385, 53631), (413, 49995), (495, 41713), (505, 40887), (531, 38885), (649, 31815), (693, 29795), (707, 29205), (885, 23331), (909, 22715), (1111, 18585), (1155, 17877), (1239, 16665), (1515, 13629), (1947, 10605), (2065, 9999), (2121, 9735), (2655, 7777), (3245, 6363), (3333, 6195), (3465, 5959), (3535, 5841), (3717, 5555), (4543, 4545)]