31683860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3931}}^1$

素因数の和:3984

約数の個数: 48

約数和(自身を含む): 73984512

約数和(自身を除く): 42300652

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 3931, 4030, 7862, 8060, 15724, 19655, 39310, 51103, 78620, 102206, 121861, 204412, 243722, 255515, 487444, 511030, 609305, 1022060, 1218610, 1584193, 2437220, 3168386, 6336772, 7920965, 15841930, 31683860]

約数ペア:

[(1, 31683860), (2, 15841930), (4, 7920965), (5, 6336772), (10, 3168386), (13, 2437220), (20, 1584193), (26, 1218610), (31, 1022060), (52, 609305), (62, 511030), (65, 487444), (124, 255515), (130, 243722), (155, 204412), (260, 121861), (310, 102206), (403, 78620), (620, 51103), (806, 39310), (1612, 19655), (2015, 15724), (3931, 8060), (4030, 7862)]