20123758838

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1\times {\mathrm{449}}^1$

素因数の和:885

約数の個数: 64

約数和(自身を含む): 33094656000

約数和(自身を除く): 12970897162

約数列:

[1, 2, 19, 37, 38, 74, 127, 251, 254, 449, 502, 703, 898, 1406, 2413, 4699, 4769, 4826, 8531, 9287, 9398, 9538, 16613, 17062, 18574, 31877, 33226, 57023, 63754, 89281, 112699, 114046, 176453, 178562, 225398, 315647, 352906, 605663, 631294, 1083437, 1179449, 1211326, 2109851, 2141281, 2166874, 2358898, 4169863, 4219702, 4282562, 8339726, 14312773, 22409531, 28625546, 40087169, 44819062, 79227397, 80174338, 158454794, 271942687, 529572601, 543885374, 1059145202, 10061879419, 20123758838]

約数ペア:

[(1, 20123758838), (2, 10061879419), (19, 1059145202), (37, 543885374), (38, 529572601), (74, 271942687), (127, 158454794), (251, 80174338), (254, 79227397), (449, 44819062), (502, 40087169), (703, 28625546), (898, 22409531), (1406, 14312773), (2413, 8339726), (4699, 4282562), (4769, 4219702), (4826, 4169863), (8531, 2358898), (9287, 2166874), (9398, 2141281), (9538, 2109851), (16613, 1211326), (17062, 1179449), (18574, 1083437), (31877, 631294), (33226, 605663), (57023, 352906), (63754, 315647), (89281, 225398), (112699, 178562), (114046, 176453)]