81488560

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19219}}^1$

素因数の和:19285

約数の個数: 40

約数和(自身を含む): 193045680

約数和(自身を除く): 111557120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 19219, 38438, 76876, 96095, 153752, 192190, 307504, 384380, 768760, 1018607, 1537520, 2037214, 4074428, 5093035, 8148856, 10186070, 16297712, 20372140, 40744280, 81488560]

約数ペア:

[(1, 81488560), (2, 40744280), (4, 20372140), (5, 16297712), (8, 10186070), (10, 8148856), (16, 5093035), (20, 4074428), (40, 2037214), (53, 1537520), (80, 1018607), (106, 768760), (212, 384380), (265, 307504), (424, 192190), (530, 153752), (848, 96095), (1060, 76876), (2120, 38438), (4240, 19219)]