20305395

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:185

約数の個数: 96

約数和(自身を含む): 43130880

約数和(自身を除く): 22825485

約数列:

[1, 3, 5, 9, 11, 15, 17, 19, 33, 45, 51, 55, 57, 85, 95, 99, 127, 153, 165, 171, 187, 209, 255, 285, 323, 381, 495, 561, 627, 635, 765, 855, 935, 969, 1045, 1143, 1397, 1615, 1683, 1881, 1905, 2159, 2413, 2805, 2907, 3135, 3553, 4191, 4845, 5715, 6477, 6985, 7239, 8415, 9405, 10659, 10795, 12065, 12573, 14535, 17765, 19431, 20955, 21717, 23749, 26543, 31977, 32385, 36195, 41021, 53295, 62865, 71247, 79629, 97155, 108585, 118745, 123063, 132715, 159885, 205105, 213741, 238887, 356235, 369189, 398145, 451231, 615315, 1068705, 1194435, 1353693, 1845945, 2256155, 4061079, 6768465, 20305395]

約数ペア:

[(1, 20305395), (3, 6768465), (5, 4061079), (9, 2256155), (11, 1845945), (15, 1353693), (17, 1194435), (19, 1068705), (33, 615315), (45, 451231), (51, 398145), (55, 369189), (57, 356235), (85, 238887), (95, 213741), (99, 205105), (127, 159885), (153, 132715), (165, 123063), (171, 118745), (187, 108585), (209, 97155), (255, 79629), (285, 71247), (323, 62865), (381, 53295), (495, 41021), (561, 36195), (627, 32385), (635, 31977), (765, 26543), (855, 23749), (935, 21717), (969, 20955), (1045, 19431), (1143, 17765), (1397, 14535), (1615, 12573), (1683, 12065), (1881, 10795), (1905, 10659), (2159, 9405), (2413, 8415), (2805, 7239), (2907, 6985), (3135, 6477), (3553, 5715), (4191, 4845)]