81280240

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12241}}^1$

素因数の和:12337

約数の個数: 40

約数和(自身を含む): 191269008

約数和(自身を除く): 109988768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3320, 6640, 12241, 24482, 48964, 61205, 97928, 122410, 195856, 244820, 489640, 979280, 1016003, 2032006, 4064012, 5080015, 8128024, 10160030, 16256048, 20320060, 40640120, 81280240]

約数ペア:

[(1, 81280240), (2, 40640120), (4, 20320060), (5, 16256048), (8, 10160030), (10, 8128024), (16, 5080015), (20, 4064012), (40, 2032006), (80, 1016003), (83, 979280), (166, 489640), (332, 244820), (415, 195856), (664, 122410), (830, 97928), (1328, 61205), (1660, 48964), (3320, 24482), (6640, 12241)]