65720240

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43237}}^1$

素因数の和:43269

約数の個数: 40

約数和(自身を含む): 160845360

約数和(自身を除く): 95125120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 43237, 86474, 172948, 216185, 345896, 432370, 691792, 821503, 864740, 1643006, 1729480, 3286012, 3458960, 4107515, 6572024, 8215030, 13144048, 16430060, 32860120, 65720240]

約数ペア:

[(1, 65720240), (2, 32860120), (4, 16430060), (5, 13144048), (8, 8215030), (10, 6572024), (16, 4107515), (19, 3458960), (20, 3286012), (38, 1729480), (40, 1643006), (76, 864740), (80, 821503), (95, 691792), (152, 432370), (190, 345896), (304, 216185), (380, 172948), (760, 86474), (1520, 43237)]