20705984

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{607}}^1$

素因数の和:673

約数の個数: 56

約数和(自身を含む): 45403008

約数和(自身を除く): 24697024

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 41, 52, 64, 82, 104, 164, 208, 328, 416, 533, 607, 656, 832, 1066, 1214, 1312, 2132, 2428, 2624, 4264, 4856, 7891, 8528, 9712, 15782, 17056, 19424, 24887, 31564, 34112, 38848, 49774, 63128, 99548, 126256, 199096, 252512, 323531, 398192, 505024, 647062, 796384, 1294124, 1592768, 2588248, 5176496, 10352992, 20705984]

約数ペア:

[(1, 20705984), (2, 10352992), (4, 5176496), (8, 2588248), (13, 1592768), (16, 1294124), (26, 796384), (32, 647062), (41, 505024), (52, 398192), (64, 323531), (82, 252512), (104, 199096), (164, 126256), (208, 99548), (328, 63128), (416, 49774), (533, 38848), (607, 34112), (656, 31564), (832, 24887), (1066, 19424), (1214, 17056), (1312, 15782), (2132, 9712), (2428, 8528), (2624, 7891), (4264, 4856)]