20544472

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:356

約数の個数: 64

約数和(自身を含む): 45007200

約数和(自身を除く): 24462728

約数列:

[1, 2, 4, 8, 13, 19, 26, 37, 38, 52, 74, 76, 104, 148, 152, 247, 281, 296, 481, 494, 562, 703, 962, 988, 1124, 1406, 1924, 1976, 2248, 2812, 3653, 3848, 5339, 5624, 7306, 9139, 10397, 10678, 14612, 18278, 20794, 21356, 29224, 36556, 41588, 42712, 69407, 73112, 83176, 135161, 138814, 197543, 270322, 277628, 395086, 540644, 555256, 790172, 1081288, 1580344, 2568059, 5136118, 10272236, 20544472]

約数ペア:

[(1, 20544472), (2, 10272236), (4, 5136118), (8, 2568059), (13, 1580344), (19, 1081288), (26, 790172), (37, 555256), (38, 540644), (52, 395086), (74, 277628), (76, 270322), (104, 197543), (148, 138814), (152, 135161), (247, 83176), (281, 73112), (296, 69407), (481, 42712), (494, 41588), (562, 36556), (703, 29224), (962, 21356), (988, 20794), (1124, 18278), (1406, 14612), (1924, 10678), (1976, 10397), (2248, 9139), (2812, 7306), (3653, 5624), (3848, 5339)]