20844512

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{563}}^1$

素因数の和:675

約数の個数: 48

約数和(自身を含む): 44770320

約数和(自身を除く): 23925808

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 89, 104, 178, 208, 356, 416, 563, 712, 1126, 1157, 1424, 2252, 2314, 2848, 4504, 4628, 7319, 9008, 9256, 14638, 18016, 18512, 29276, 37024, 50107, 58552, 100214, 117104, 200428, 234208, 400856, 651391, 801712, 1302782, 1603424, 2605564, 5211128, 10422256, 20844512]

約数ペア:

[(1, 20844512), (2, 10422256), (4, 5211128), (8, 2605564), (13, 1603424), (16, 1302782), (26, 801712), (32, 651391), (52, 400856), (89, 234208), (104, 200428), (178, 117104), (208, 100214), (356, 58552), (416, 50107), (563, 37024), (712, 29276), (1126, 18512), (1157, 18016), (1424, 14638), (2252, 9256), (2314, 9008), (2848, 7319), (4504, 4628)]