20475702

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:214

約数の個数: 72

約数和(自身を含む): 49330944

約数和(自身を除く): 28855242

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 53, 78, 106, 117, 127, 159, 169, 234, 254, 318, 338, 381, 477, 507, 689, 762, 954, 1014, 1143, 1378, 1521, 1651, 2067, 2286, 3042, 3302, 4134, 4953, 6201, 6731, 8957, 9906, 12402, 13462, 14859, 17914, 20193, 21463, 26871, 29718, 40386, 42926, 53742, 60579, 64389, 80613, 87503, 121158, 128778, 161226, 175006, 193167, 262509, 386334, 525018, 787527, 1137539, 1575054, 2275078, 3412617, 6825234, 10237851, 20475702]

約数ペア:

[(1, 20475702), (2, 10237851), (3, 6825234), (6, 3412617), (9, 2275078), (13, 1575054), (18, 1137539), (26, 787527), (39, 525018), (53, 386334), (78, 262509), (106, 193167), (117, 175006), (127, 161226), (159, 128778), (169, 121158), (234, 87503), (254, 80613), (318, 64389), (338, 60579), (381, 53742), (477, 42926), (507, 40386), (689, 29718), (762, 26871), (954, 21463), (1014, 20193), (1143, 17914), (1378, 14859), (1521, 13462), (1651, 12402), (2067, 9906), (2286, 8957), (3042, 6731), (3302, 6201), (4134, 4953)]