78880580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1\times {\mathrm{443}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 172307520

約数和(自身を除く): 93426940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 307, 443, 580, 614, 886, 1228, 1535, 1772, 2215, 3070, 4430, 6140, 8860, 8903, 12847, 17806, 25694, 35612, 44515, 51388, 64235, 89030, 128470, 136001, 178060, 256940, 272002, 544004, 680005, 1360010, 2720020, 3944029, 7888058, 15776116, 19720145, 39440290, 78880580]

約数ペア:

[(1, 78880580), (2, 39440290), (4, 19720145), (5, 15776116), (10, 7888058), (20, 3944029), (29, 2720020), (58, 1360010), (116, 680005), (145, 544004), (290, 272002), (307, 256940), (443, 178060), (580, 136001), (614, 128470), (886, 89030), (1228, 64235), (1535, 51388), (1772, 44515), (2215, 35612), (3070, 25694), (4430, 17806), (6140, 12847), (8860, 8903)]